Anna spent
23 of her money on some biscuits and
34 of her remaining money on 5 wafers. Each wafer cost thrice as much as a biscuit. How many biscuits did she buy?
Biscuits |
Remaining money |
2x4 |
1x4 |
|
5 Wafers |
Left |
|
3x1 |
1x1 |
8 u |
3 u |
1 u |
Cost of 1 wafer = Cost of 3 biscuits
(x5)Cost of 5 wafers = Cost of 15 biscuits
3 u = 15
1 u = 15 ÷ 3 = 5
Number of biscuits that Anna bought
= 8 u
= 8 x 5
= 40
Answer(s): 40