Tim and Lucy share some erasers.
35 of Tim's erasers is equal to
310 of Lucy's erasers. Given that Lucy has 20 erasers more than Tim, how many erasers do they have altogether?
35 of Tim's erasers = 310 of Lucy's erasers
Number of Tim's erasers = 5 u
Number of Lucy's erasers = 10 u
Number of erasers that Lucy has more than Tim
= 10 u - 5 u
= 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
Total number of erasers
= 5 u + 10 u
= 15 u
= 15 x 4
= 60
Answer(s): 60
