Archie had some pens. He gave
56 of his pens to Liam and bought 4 new pens. After that, he gave
25 of his remaining pens to his sister and bought another 7 new pens. In the end, Archie had 28 pens.
- How many pens did Archie give to his sister?
- How many pens did Archie have at first?
(a)
Fraction of his remaining pens after he gave to his sister
= 1 -
25=
35 35 of his remaining pens = 28 - 7 = 21
15 of his remaining pens = 21 ÷ 3 = 7
25 of his remaining pens = 2 x 7 = 14
Number of pens that Archie gave to his sister = 14
(b)
55 of his remaining pens = 5 x 7 = 35
Fraction of his total pens after he gave to Liam
= 1 -
56=
16 16 of his total pens = 35 - 4 = 31
66 of his total pens = 6 x 31 = 186
Number of pens that Archie had at first = 186
Answer(s): (a) 14; (b) 186