Peter had some pens. He gave
23 of his pens to Perry and bought 4 new pens. After that, he gave
35 of his remaining pens to his cousin and bought another 7 new pens. In the end, Peter had 27 pens.
- How many pens did Peter give to his cousin?
- How many pens did Peter have at first?
(a)
Fraction of his remaining pens after he gave to his cousin
= 1 -
35=
25 25 of his remaining pens = 27 - 7 = 20
15 of his remaining pens = 20 ÷ 2 = 10
35 of his remaining pens = 3 x 10 = 30
Number of pens that Peter gave to his cousin = 30
(b)
55 of his remaining pens = 5 x 10 = 50
Fraction of his total pens after he gave to Perry
= 1 -
23=
13 13 of his total pens = 50 - 4 = 46
33 of his total pens = 3 x 46 = 138
Number of pens that Peter had at first = 138
Answer(s): (a) 30; (b) 138