divide £21 in ratio 3:4
Person (A) Person (B) 3 4 3 4 3 4----------(3+4) + (3+4) + (3+4) = 7 + 7 + 7 = 21Person (A) = 3 + 3 + 3 = 9Person (B) = 4 + 4 + 4 = 12New Ratio:£9 : £12