There are 59 silver and pink erasers in Box U. There are 39 silver and grey erasers in Box V. The number of pink erasers in Box U is five times the number of grey erasers in Box V. The number of silver erasers in both boxes is the same.
- How many grey erasers are there in Box V?
- Find the total number of silver erasers in both boxes.
(a)
Number of pink erasers = 5 u
Number of grey erasers = 1 u
Silver erasers + 5 u = 59 --- (1)
Silver erasers + 1 u = 39 --- (2)
(1) - (2)
5 u - 1 u = 59 - 39
4 u = 20
1 u = 20 ÷ 4 = 5
Number of grey erasers
= 1 u
= 5
(b)
Number of silver erasers in Box V
= 39 - 5
= 34
Number of silver erasers in both boxes
= 2 x 34
= 68
Answer(s): (a) 5; (b) 68