Question

85 POINTS! If y is 2.5 when x is 5 and y varies directly with x, find y when x is 20.

Answer 1

Y = 10 when X = 20

Explanation:

Answer 2

100

Explanation:

y∝x∴y=k⋅x or k=y over x=2.50.5=5

(k is proportionality costant) When

x

=

20

;

y

=

5

⋅

20

=

100

[Ans]