Question

5. A packet of razors and a bar of soap cost £5.50. If the soap costs £2.50 less than the razors, find the cost of each.

Answer 1

Let the cost of soap be x,
cost of razors = x + 2.5
total cost = 2x + 2.5
2x + 2.5 = 5.5
2x = 3
x = 1.5
cost of razors = 1.5 + 2.5
= 4

The cost of the packet of razors and bar of soap is £4.00 and £1.50 respectively.

Answer 2

R+s=5.5
R-s=2.5
Adding both
2r=8
R=4
S=5.5-4=1.5