White Rice, Cooked : Uncooked : totalEC72 wrote:Mrs. Lim bought some white rice and some brown rice. She cooked an equal amount of white and brown rice. She had 3/4 of the white rice and 3/8 of the brown rice left. What fraction of the rice which Mrs. Lim bought was cooked?

1 : 3 : 4

Brown rice, Cooked : Uncooked : Total

5: 3 : 8

The amount of rice cooked is equal for bronw and white, we can common the cooked rice for them to share common unit.

White Rice, Cooked : Uncooked : Total

5 : 15 : 18

Total rice bought = 18 + 8 =26u

Total rice cooked = 5 + 5 = 10u

Fraction of rice cooked/bought = 10/26 => 5/13