Explanation:
(a)
2:5:3 means that there are 2+5+3 = 10 units of the price money distributed between the team.
£1500 / 10 = £150 per unit.
person A gets therefore 2×150 = £300
person B gets 5×150 = £750
person C gets 3×150 = £450
so, person B gets 750-300 = £450 more money than person A.
(b)
40% of £450 = 450×0.4 = £180
so donated to total prize money is
180/1500 = 3/25