Question

The shop sells bags of 40 marbles.
One bag has marbles in the ratio red : blue : green = 1 : 3 : 4.
(i) Calculate the number of marbles of each colour.​

Answer 1

Answer:

let barbles be 1x, 3x, 4x.

1x+3x+4x=40

8x=40

x=5

Red=1x Blue=3x Green=4x

=5 =3×5 =4×5

=15 =20