There are 208 marbles in Hazel's collection. The number of her black marbles is 3 times the number of her white marbles.
- How many white marbles does she have?
- How many black marbles does she have?
(a)
Number of white marbles = 1 u
Number of black marbles = 3 u
Total number of marbles
= 1 u + 3 u
= 4 u
4 u = 208
1 u = 208 ÷ 4 = 52
Number of white marbles
= 1 u
= 52
(b)
Number of black marbles
= 3 u
= 3 x 52
= 156
Answer(s): (a) 52; (b) 156