"Ajay ordered 4 pairs of black socks and some additional pairs of blue socks. The price of the black
Channel: Doubtnut
Date: 05/04/2020

"Ajay 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 ones. When the order was
 filled, it was found that the number of pairs of the two colours had been
 interchanged. This increased the bill by 50%. Find the ratio of the number of
 pairs of black socks to the number of pairs of blue socks in the original
 order."