a brother and a sister share out a collection of 5000 stamps in the ratio 5:3.The brother then shares his stamps with his two friends in the ratio 3:1:1 keeping most for him.How many stamps do each of his friends receive?

Answer 1

5000/(5+3) = 625
so brother had 3*625 = 1875 stamps
1875/(3+1+1) = 375
so each friend receives 375 stamps