Answer:
see explanation
Step-by-step explanation:
sum the parts , 2 + 5 + 7 = 14 parts
Divide the profit by 14 to find the value of one part
£420 ÷ 14 = £30 , then
2 parts = 2 × £30 = £60 ← Mr Allen's share
5 parts = 5 × £30 = £150 ← Mr Broome's share
7 parts = 7 × £30 = £210 ← Mr Collin's share