Advertisements
Advertisements
प्रश्न
If (x + 2y) : (2x – y) is equal to the duplicate ratio of 3 : 2, find x : y.
Advertisements
उत्तर
If (x + 2y) : (2x – y) is equal to the duplicate ratio of 3 : 2
then `(x + 2y)/(2x - y) - (3)^2/(2)^2 = (9)/(4)`
⇒ 9(2x - y) = 4(x + 2y)
⇒ 18x - 9x = 4x + 8y
⇒ 18x - 4x = 8y + 9y
⇒ 14x - 17y
⇒ `x/y = (17)/(14)`
∴ x : y = 17 : 14.
APPEARS IN
संबंधित प्रश्न
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.
Two numbers are in the ratio 4 : 7. If their L.C.M. is 168, find the numbers.
Rohit goes to school by car at 60 km per hour and Manoj goes to school by scooty at 40 km per hour. If they both live in the same locality, find the ratio between the time taken by Rohit and Manoj to reach school.
Find the reciprocal ratio of 4 : 7
Divide Rs 1575 between Kamal and Madhu in the ratio 7 : 2.
Find the ratio of 90 cm to 1.5 m.
The ratio of the perimeter of the boundary of the shaded portion to the perimeter of the whole figure is ______.
Saturn and Jupiter take 9 hours 56 minutes and 10 hours 40 minutes, respectively for one spin on their axes. The ratio of the time taken by Saturn and Jupiter in lowest form is ______.
The marked price of a table is Rs. 625 and its sale price is Rs. 500. What is the ratio of the sale price to the marked price?
The yield of wheat from 8 hectares of land is 360 quintals. Find the number of hectares of land required for a yield of 540 quintals?
