Question

1/4 luke's marbles are white, 3/8 are blue, and the rest are 30 yellow marbles. How many of the marbles are white.

Answer 1

It is 20 white marbles

step by step Step-by-step explanation:

Fraction of the yellow marbles:

`1 - (1)/(4) - (3)/(8) = (3)/(8)`

let total number of marbles be x :

`{ \sf{ (3)/(8) \: of \: x = 30 \: yellow \: marbles}} \\ \\ (3)/(8) * x = 30 \\ \\ 3x = 30 * 8 \\ 3x = 240 \\ x = 80`

Total marbles = 80 marbles

for white marbles:

`= (1)/(4) * 80 \\ \\ = 20`