There are 62 blue and gold stamps in Box R. There are 47 blue and silver stamps in Box S. The number of gold stamps in Box R is four times the number of silver stamps in Box S. The number of blue stamps in both boxes is the same.
- How many silver stamps are there in Box S?
- Find the total number of blue stamps in both boxes.
(a)
Number of gold stamps = 4 u
Number of silver stamps = 1 u
Blue stamps + 4 u = 62 --- (1)
Blue stamps + 1 u = 47 --- (2)
(1) - (2)
4 u - 1 u = 62 - 47
3 u = 15
1 u = 15 ÷ 3 = 5
Number of silver stamps
= 1 u
= 5
(b)
Number of blue stamps in Box S
= 47 - 5
= 42
Number of blue stamps in both boxes
= 2 x 42
= 84
Answer(s): (a) 5; (b) 84