GCSE Maths Higher Set 2 Paper 1 Online Test

Poppy had an internet business selling socks. She starts by charging £5.00 for each pair plus postage of £3 for each order.

In a special offer, Poppy reduced the price for a pair of socks to £4, but increased postage to £6.

How many pairs of socks would you need to buy for the two offers cost the same?