There are thrice as many black sweaters as gold sweaters in a sale. If there are 136 black and gold sweaters altogether,
- how many black sweaters are there?
- how many more black sweaters than gold sweaters?
(a)
Number of gold sweaters = 1 u
Number of black sweaters
= 3 x 1 u
= 3 u
Total number of sweaters
= 3 u + 1 u
= 4 u
4 u = 136
1 u = 136 ÷ 4 = 34
Number of black sweaters
= 3 u
= 3 x 34
= 102
(b)
Number of more black sweaters than gold sweaters
= 3 u - 1 u
= 2 u
= 2 x 34
= 68
Answer(s): (a) 102; (b) 68