मराठी

The variable x is inversely proportional to y. If x increases by p%, then by what per cent will y decrease? - Mathematics

Advertisements
Advertisements

प्रश्न

The variable x is inversely proportional to y. If x increases by p%, then by what per cent will y decrease?

बेरीज
Advertisements

उत्तर

The variable x is inversely proportional to y.

xy = k  ...(Constant)

Since, we know that two quantities x and y are said to be in inverse proportion, if an increase in x cause a proportional decrease in y and vice-versa.

So, we can say y decrease by p%

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Direct and Inverse Proportions - Exercise [पृष्ठ ३२८]

APPEARS IN

एनसीईआरटी एक्झांप्लर Mathematics [English] Class 8
पाठ 10 Direct and Inverse Proportions
Exercise | Q 100. | पृष्ठ ३२८

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80 km/h?


In which of the following table x and y vary inversely: 

x 4 3 12 1
y 6 8 2 24

It is known that for a given mass of gas, the volume v varies inversely as the pressure p. Fill in the missing entries in the following table:

v (in cm3) ... 48 60 ... 100 ... 200
p (in atmospheres) 2 ... 3/2 1 ... 1/2 ...

A printer, prints a book of 300 pages at the rate of 30 pages per minute. Then, how long will it take to print the same book if the speed of the printer is 25 pages per minute?


In a school there is 7 periods a day each of 45 minutes duration. How long each period is if the school has 9 periods a day assuming the number of hours to be the same?


Which of the following vary inversely with each other?


Two quantities are said to vary ______ with each other if an increase in one causes a decrease in the other in such a manner that the product of their corresponding values remains constant.


If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.


A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on, it was required to complete the job in 5 months. How many extra persons should he employ to complete the work?


In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions last?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×