There are four times as many grey vests as yellow vests in a sale. If there are 150 grey and yellow vests altogether,
- how many grey vests are there?
- how many more grey vests than yellow vests?
(a)
Number of yellow vests = 1 u
Number of grey vests
= 4 x 1 u
= 4 u
Total number of vests
= 4 u + 1 u
= 5 u
5 u = 150
1 u = 150 ÷ 5 = 30
Number of grey vests
= 4 u
= 4 x 30
= 120
(b)
Number of more grey vests than yellow vests
= 4 u - 1 u
= 3 u
= 3 x 30
= 90
Answer(s): (a) 120; (b) 90