Tom had some pens. He gave
23 of his pens to Nick and bought 4 new pens. After that, he gave
27 of his remaining pens to his brother and bought another 7 new pens. In the end, Tom had 57 pens.
- How many pens did Tom give to his brother?
- How many pens did Tom have at first?
(a)
Fraction of his remaining pens after he gave to his brother
= 1 -
27=
57 57 of his remaining pens = 57 - 7 = 50
17 of his remaining pens = 50 ÷ 5 = 10
27 of his remaining pens = 2 x 10 = 20
Number of pens that Tom gave to his brother = 20
(b)
77 of his remaining pens = 7 x 10 = 70
Fraction of his total pens after he gave to Nick
= 1 -
23=
13 13 of his total pens = 70 - 4 = 66
33 of his total pens = 3 x 66 = 198
Number of pens that Tom had at first = 198
Answer(s): (a) 20; (b) 198
