Answer:
£16 : £56
Explanation:
sum the parts of the ratio , 2 + 7 = 9 parts
divide the amount by 9 to find the value of one part of the ratio
£72 ÷ 9 = £8 ← value of 1 part of the ratio, then
2 parts = 2 × £8 = £16
7 parts = 7 × £8 = £56
then £72 in the ratio 2 : 7 = £16 : £56