Question

If x and y vary directly and x = 25, when y = 5, find y when x = 15.
(keep the answer short)



if you don't know the answer don't answer or I'll report your account.​

Answer 1

Answer:

y = 3 when x is 15.

Step-by-step explanation:

Given =  x : y : : 25 : 5

Similarly,

25 : 5 : : 15 : ??

Let y's value be m.

⇒ 25 : 5 : : 15 : m

Product of extreme terms = Product of mean terms

⇒ 25m = 75

⇒ m = 75/25

⇒  m = 3

Therefore, y = 3 when x is 15.