There are 140 marbles in Cathy's collection. The number of her gold marbles is 6 times the number of her silver marbles.
- How many silver marbles does she have?
- How many gold marbles does she have?
(a)
Number of silver marbles = 1 u
Number of gold marbles = 6 u
Total number of marbles
= 1 u + 6 u
= 7 u
7 u = 140
1 u = 140 ÷ 7 = 20
Number of silver marbles
= 1 u
= 20
(b)
Number of gold marbles
= 6 u
= 6 x 20
= 120
Answer(s): (a) 20; (b) 120