Advertisements
Advertisements
प्रश्न
A bag contains Rs 1800 in the form of Rs 1 , Rs 2 and Rs 5 ooins. The ratio of the number of the respective coins is 3: 7: 11. Find the total number of ooi ns in the bag.
Advertisements
उत्तर
Let the number of Re 1, Rs 2 and Rs 5 coins be 3x, 7x and 11x
The sum of their value =
3x+ (2 × 7x) + (5 × 11x) = Rs 1800
3x + 14x + 55x = 1800
72x = 1800
x = 25
3x =3 × 25 = 75
7x = 7 × 25 = 175
11 x = 11 x 25 = 275
total = 75 + 175 + 275 = 525
Total number of coins = 525
APPEARS IN
संबंधित प्रश्न
If the ratio between 8 and 11 is the same as the ratio of 2x - y to x + 2y, find the value of `(7"x")/(9"y")`
A school has 630 students. The ratio of the number of boys to the number of girls is 3 : 2. This ratio changes to 7 : 5 after the admission of 90 new students. Find the number of newly admitted boys.
If a,b,c are in continued proportion,
show that: `("a"^2 + "b"^2)/("b"("a" + "c")` = `("b"("a" + "c"))/("b"^2 + "c"^2)`
Express the following ratios in its simplest form :
1 hour: 45 minutes
If (x - 9) : (3x + 6) is the duplicate ratio of 4 : 9, find the value of x.
Find the compound ratio of the following:
If P : Q = 6 : 7, Q : R = 8 : 9 find P : Q : R.
Express the given ratio in its simplest form: 10 paise : ₹ 1
₹120 is to be divided between Hari and Gopi in the ratio 5 : 3. How much does each get?
A tea merchant blends two varieties of tea costing her Rs. 234 and Rs. 130 per kg in the ratio of their costs. If the weight of the mixture is 84 kg, then find the weight of each variety of tea.
Out of 1800 students in a school, 750 opted basketball, 800 opted cricket and remaining opted table tennis. If a student can opt only one game, find the ratio of number of students who opted basketball to the total number of students.
