हिंदी

In a Cricket Team Tournament 16 Teams Participated. a Sum of ₹8000 is to Be Awarded Among Themselves as Prize Money. If the Last Place Team is Awarded ₹275 in Prize Money and the Award Increases by - Mathematics

Advertisements
Advertisements

प्रश्न

In a cricket team tournament 16 teams participated. A sum of ₹8000 is to be awarded among themselves as prize money. If the last place team is awarded ₹275 in prize money and the award increases by the same amount for successive finishing places, then how much amount will the first place team receive?

Advertisements

उत्तर

We have,
the total sum of prize money to be awarded among 16 teams, S16 = ₹8000 and
the prize money awarded to the last place team i.e. a16 = ₹275
As, the award increases by the same amount for successive finishing places.
So, the prize money are in A.P.
Let the prize money awarded to the first team be a.
Now,

\[S_{16} = 8000\]

\[ \Rightarrow \frac{16}{2}\left[ a + a_{16} \right] = 8000\]

\[ \Rightarrow 8\left[ a + 275 \right] = 8000\]

\[ \Rightarrow a + 275 = \frac{8000}{8}\]

\[ \Rightarrow a = 1000 - 275\]

\[ \therefore a = 725\]

So, the amount which the first place team will recieve is ₹725.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 19: Arithmetic Progression - Exercise 19.7 [पृष्ठ ५०]

APPEARS IN

आरडी शर्मा Mathematics [English] Class 11
अध्याय 19 Arithmetic Progression
Exercise 19.7 | Q 17 | पृष्ठ ५०

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

If the sum of a certain number of terms of the A.P. 25, 22, 19, … is 116. Find the last term


If the sum of first p terms of an A.P. is equal to the sum of the first q terms, then find the sum of the first (p + q) terms.


If the sum of n terms of an A.P. is 3n2 + 5n and its mth term is 164, find the value of m.


A farmer buys a used tractor for Rs 12000. He pays Rs 6000 cash and agrees to pay the balance in annual installments of Rs 500 plus 12% interest on the unpaid amount. How much will be the tractor cost him?


If the nth term an of a sequence is given by an = n2 − n + 1, write down its first five terms.


Show that the following sequence is an A.P. Also find the common difference and write 3 more terms in case.

\[\sqrt{2}, 3\sqrt{2}, 5\sqrt{2}, 7\sqrt{2}, . . .\]


Show that the following sequence is an A.P. Also find the common difference and write 3 more terms in case. 

9, 7, 5, 3, ...


The nth term of a sequence is given by an = 2n + 7. Show that it is an A.P. Also, find its 7th term.


Find:

 10th term of the A.P. 1, 4, 7, 10, ...


Find: 

18th term of the A.P.

\[\sqrt{2}, 3\sqrt{2}, 5\sqrt{2},\]


How many terms are there in the A.P. 7, 10, 13, ... 43 ?


If 10 times the 10th term of an A.P. is equal to 15 times the 15th term, show that 25th term of the A.P. is zero.


In a certain A.P. the 24th term is twice the 10th term. Prove that the 72nd term is twice the 34th term.


Find the four numbers in A.P., whose sum is 50 and in which the greatest number is 4 times the least.


Find the sum of the following arithmetic progression :

a + b, a − b, a − 3b, ... to 22 terms


Find the sum of the following arithmetic progression :

 (x − y)2, (x2 + y2), (x + y)2, ... to n terms


Find the sum of all integers between 50 and 500 which are divisible by 7.


If the sum of a certain number of terms of the AP 25, 22, 19, ... is 116. Find the last term.


If x, y, z are in A.P. and A1 is the A.M. of x and y and A2 is the A.M. of y and z, then prove that the A.M. of A1 and A2 is y.


There are 25 trees at equal distances of 5 metres in a line with a well, the distance of the well from the nearest tree being 10 metres. A gardener waters all the trees separately starting from the well and he returns to the well after watering each tree to get water for the next. Find the total distance the gardener will cover in order to water all the trees.


A piece of equipment cost a certain factory Rs 600,000. If it depreciates in value, 15% the first, 13.5% the next year, 12% the third year, and so on. What will be its value at the end of 10 years, all percentages applying to the original cost?


Shamshad Ali buys a scooter for Rs 22000. He pays Rs 4000 cash and agrees to pay the balance in annual instalments of Rs 1000 plus 10% interest on the unpaid amount. How much the scooter will cost him.


A carpenter was hired to build 192 window frames. The first day he made five frames and each day thereafter he made two more frames than he made the day before. How many days did it take him to finish the job? 


A man accepts a position with an initial salary of ₹5200 per month. It is understood that he will receive an automatic increase of ₹320 in the very next month and each month thereafter.
(i) Find his salary for the tenth month.
(ii) What is his total earnings during the first year?


Write the sum of first n odd natural numbers.


If n arithmetic means are inserted between 1 and 31 such that the ratio of the first mean and nth mean is 3 : 29, then the value of n is


The first term of an A.P. is a, the second term is b and the last term is c. Show that the sum of the A.P. is `((b + c - 2a)(c + a))/(2(b - a))`.


The product of three numbers in A.P. is 224, and the largest number is 7 times the smallest. Find the numbers


If a1, a2, ..., an are in A.P. with common difference d (where d ≠ 0); then the sum of the series sin d (cosec a1 cosec a2 + cosec a2 cosec a3 + ...+ cosec an–1 cosec an) is equal to cot a1 – cot an 


If in an A.P., Sn = qn2 and Sm = qm2, where Sr denotes the sum of r terms of the A.P., then Sq equals ______.


The sum of terms equidistant from the beginning and end in an A.P. is equal to ______.


If the first term of an A.P. is 3 and the sum of its first 25 terms is equal to the sum of its next 15 terms, then the common difference of this A.P. is ______.


The internal angles of a convex polygon are in A.P. The smallest angle is 120° and the common difference is 5°. The number to sides of the polygon is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×