Get premium membership and access revision papers with marking schemes, video lessons and live classes.
Mumbua and Njeri each made a 20 kg mixture of maize and beans. Mumbua mixed the maize and beans in the ratio 3:2. Njeri mixed the maize and beans in the ratio 1:3. How many more kilograms of beans did Njeri use than Mumbua?
A. 15
B. 12
C. 8
D. 7