Answer: £ 0.75
Step-by-step explanation:
Number of pens to be bought = 30
Shop A :
pack of 10 = £1.90
since Eve is buying 30 pens , this means Eve will buy 3 packs of ten , that is
3 x ( £1.90 ) = £5.70
Shop B:
pack of 5 = £1.10
condition : buy 1 pack and get 1 half price.
since Eve is buying 30 pens , then Eve will buy 3 pack of 5 and get 3 half price , that is :
3(1.10) + 3(0.55)
= £3.30 + £1.65
= £4.95
Therefore , the difference in cost for all 30 pens between the two shops will be :
£5.70 - £4.95 = £ 0.75
