There are 159 marbles in Diana's collection. The number of her brown marbles is 2 times the number of her silver marbles.
- How many silver marbles does she have?
- How many brown marbles does she have?
(a)
Number of silver marbles = 1 u
Number of brown marbles = 2 u
Total number of marbles
= 1 u + 2 u
= 3 u
3 u = 159
1 u = 159 ÷ 3 = 53
Number of silver marbles
= 1 u
= 53
(b)
Number of brown marbles
= 2 u
= 2 x 53
= 106
Answer(s): (a) 53; (b) 106