Andy had some coins. He gave
56 of his coins to Mark and bought 4 new coins. After that, he gave
49 of his remaining coins to his cousin and bought another 7 new coins. In the end, Andy had 22 coins.
- How many coins did Andy give to his cousin?
- How many coins did Andy have at first?
(a)
Fraction of his remaining coins after he gave to his cousin
= 1 -
49=
59 59 of his remaining coins = 22 - 7 = 15
19 of his remaining coins = 15 ÷ 5 = 3
49 of his remaining coins = 4 x 3 = 12
Number of coins that Andy gave to his cousin = 12
(b)
99 of his remaining coins = 9 x 3 = 27
Fraction of his total coins after he gave to Mark
= 1 -
56=
16 16 of his total coins = 27 - 4 = 23
66 of his total coins = 6 x 23 = 138
Number of coins that Andy had at first = 138
Answer(s): (a) 12; (b) 138