Question

3 calculators and 4 books cost £23

2 calculators and 3 books cost £16
Work out the price of a single calculator and a single book.
Price of a calculator =
Price of a book =

Answer 1

Explanation:

Let the calculators be C and the books be B.

3C + 4B = 23 and 2C + 3B = 16

3C = 23 - 4B 2(23 -
`(4B)/(3)`) + 3B = 16

C = 23 - 4B 46 -
`(8B)/(3)` + 3B = 16

3 46 -
`(-8B + 3B )/(3)`