Question

A trader made a profit of 3.50 naira on shirts he bought for 28 naira how much profit would he make at the same rate on goods which he bought for 42 naira

Answer 1

I would just set up a simple proportion:
x/42 = 3.5/28
x = 42(3.5/28) = .....

Answer 2

%Profit = (3.5/28)*100 = 12.5.

Profit = 0.125*42 =

Answer 3

5.25

Answer 4

#28=#3.50
#42= p
28p =147
P=#5.25

Answer 5

5.25

Answer 6

Correct! The trader would make a profit of 5.25 naira on goods which he bought for 42 naira.