There are 117 marbles in Mary's collection. The number of her yellow marbles is 2 times the number of her pink marbles.
- How many pink marbles does she have?
- How many yellow marbles does she have?
(a)
Number of pink marbles = 1 u
Number of yellow marbles = 2 u
Total number of marbles
= 1 u + 2 u
= 3 u
3 u = 117
1 u = 117 ÷ 3 = 39
Number of pink marbles
= 1 u
= 39
(b)
Number of yellow marbles
= 2 u
= 2 x 39
= 78
Answer(s): (a) 39; (b) 78