John ordered 4 pairs of black socks and some additional pairs of blue socks. The price of the black socks per pair was twice that of the blue. When the order was filled,it was found that the no. Of pairs of the two colours had been interchanged. This increased the bill by 50%. What was the ratio of the no. Of pairs of black socks to the no. Of pairs of blue socks in the original order? Please provide the solution.

Shrey , 11 Years ago

Grade 11