Advertisements
Advertisements
प्रश्न
If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find y, if x = 33
Advertisements
उत्तर
`(2"y"+5"x")/(3"y"-5"x")=5/2`
Given x = 33
`(2"y"+5xx33)/(3"y"-5xx33)=5/2`
⇒ `(2"y"+165)/(3"y"-165)=5/2`
⇒ 2 × (2y + 165) = 5 × (3y − 165)
⇒ 4y + 330 = 15y − 825
⇒ 11y = 1155
⇒ y = `1155/11` = 105
APPEARS IN
संबंधित प्रश्न
A football team won 10 matches out of the total number of matches they played. If their win percentage was 40, then how many matches did they play in all?
If m : n = 3 : 8, find the value of (3m+2n) : (5m+n)
A man's monthly inoome is Rs 5,000. He saves every month a minimum of R~ 800. Find the ratio of his:
Annual expenses to annual Income.
Find the duplicate ratio of the following :
`sqrt 10 : sqrt 14`
Find the triplicate ratio of the following :
3 : 5
If `(7"m" + 2"n")/(7"m" - 2"n") = 5/3` use properties of proportion to find:
(i) m : n
(ii) `("m"^2 + "n"^2)/("m"^2 - "n"^2)`
Solve for x: `(3x^2 + 5x + 18)/(5x^2 + 6x + 12) = (3x + 5)/(5x - 6)`.
The ratio of the pocket money saved by Lokesh and his sister is 5 : 6. If the sister saves Rs 30 more, how much more the brother should save in order to keep the ratio of their savings unchanged?
If `x/(b + c - a) = y/(c + a - b) = z/(a + b - c)` prove that each ratio’s equal to `(x + y + z)/(a + b + c)`.
12 hours : 30 hours = 8 km : 20 km
