Question

if x varies directly as y and x=6 when y=20,find y when x =30​

Answer 1

Answer:

100

Explanation: x/y=6/20

20x=6y .......1

x/y=30/?

x?=30y.......2 equatin 1 and 2 we get

6/30=20/?

5=20/?

?=20(5)

?=100 hence proved