Erika spent
34 of her money on some tarts and
23 of her remaining money on 7 muffins. Each muffin cost twice as much as a tart. How many tarts did she buy?
Tarts |
Remaining money |
3x3 |
1x3 |
|
7 Muffins |
Left |
|
2x1 |
1x1 |
9 u |
2 u |
1 u |
Cost of 1 muffin = Cost of 2 tarts
(x7)Cost of 7 muffins = Cost of 14 tarts
2 u = 14
1 u = 14 ÷ 2 = 7
Number of tarts that Erika bought
= 9 u
= 9 x 7
= 63
Answer(s): 63