Question

Eight students got a B for the final test.If the ratio of the students that got A to the students who got B is y:x how many students got a A?Write a formula to give the number of students who got A, if x or y is given

Answer 1

Number of students who got grade A =
`(8y)/(x)`

Explanation:

Number of students who got grade B = 8

Ratio of the students that got A to the students who got B =
`y:x`

That is

Number of students who got grade A : Number of students who got grade B =

`y:x`

Number of students who got grade A : 8 =
`y:x`

Therefore,

Number of students who got grade A =
`(8y)/(x)`