Question

If Y is inversely proportional to x and y=4 when x= 100, what is the value of y when x=250

Answer 1

y=10

Explanation:

`(4)/(100)`=
`(y)/(250)`

cross-multiply, 4*250=100y

isolate the variable and solve for y, 1000=100y

divide 100 on both sides, 10=y