Question

15. A man ordered 4 pairs of black socks and some pairs
of brown socks. The price of a black pair is double
that of a brown pair. While preparing the bill, the
clerk interchanged the number of black and brown
pairs by mistake which increased the bill by 50%.
The ratio of the number of black and brown pair of
socks in the original order was
(a) 4:1
(b) 2:1
(c) 1:4
(d) 1:2
plz explain the process​

Answer 1

answer is correct

mark me as brainlist

Answer 2

the answer must be B because of interchange otherwise it was d