There are thrice as many grey windbreakers as brown windbreakers in a sale. If there are 168 grey and brown windbreakers altogether,
- how many grey windbreakers are there?
- how many more grey windbreakers than brown windbreakers?
(a)
Number of brown windbreakers = 1 u
Number of grey windbreakers
= 3 x 1 u
= 3 u
Total number of windbreakers
= 3 u + 1 u
= 4 u
4 u = 168
1 u = 168 ÷ 4 = 42
Number of grey windbreakers
= 3 u
= 3 x 42
= 126
(b)
Number of more grey windbreakers than brown windbreakers
= 3 u - 1 u
= 2 u
= 2 x 42
= 84
Answer(s): (a) 126; (b) 84