Dylan had some coins. He gave
23 of his coins to Harry and bought 4 new coins. After that, he gave
25 of his remaining coins to his sister and bought another 7 new coins. In the end, Dylan had 22 coins.
- How many coins did Dylan give to his sister?
- How many coins did Dylan have at first?
(a)
Fraction of his remaining coins after he gave to his sister
= 1 -
25=
35 35 of his remaining coins = 22 - 7 = 15
15 of his remaining coins = 15 ÷ 3 = 5
25 of his remaining coins = 2 x 5 = 10
Number of coins that Dylan gave to his sister = 10
(b)
55 of his remaining coins = 5 x 5 = 25
Fraction of his total coins after he gave to Harry
= 1 -
23=
13 13 of his total coins = 25 - 4 = 21
33 of his total coins = 3 x 21 = 63
Number of coins that Dylan had at first = 63
Answer(s): (a) 10; (b) 63