Ratio
1. mrs perry shares out 20 biscuits between gemma and zak in the ratio 1: 4. how many biscuits do they both get?
2. mr castle shares out 80 marbles beween emily and asif in the ratio 7: 1. how many marbles do they each get?
3. ms adams shares out 10 pencils between niamh and jack in the ratio 2: 3. how many do they each get?