Question

If x and 2y varies directly and x=16 when y=2 find x, when y=10??

Answer 1

Answer:

X=kY

2

⇒4=k×5

2

⇒k=

25

4

X=

25

4

Y

2

⇒X=

25

4

15

2

=

25

4×225

=36