Mrs Toh baked 7 muffins more than swiss rows. Each muffin needed 0.07 kg of flour while each cake needed 0.5 kg of flour. She used 1.23 kg more flour for the swiss rows than for the muffins. How many muffins did Mrs Toh bake?
| |
Swiss Rows |
Muffins |
Difference |
| Number |
1 u |
1 u + 7 |
|
| Value |
0.5 |
0.07 |
|
| Total value |
0.5 u |
0.07 u + 0.49 |
0.43 u - 0.49 |
Amount of flour needed for muffins
= 0.07 x (1 u + 7)
= 0.07 u + 0.49
Amount of more flour for the swiss rows than the muffins
= 0.5 u - (0.07 u + 0.49)
= 0.5 u - 0.07 u - 0.49
= 0.43 u - 0.49
0.43 u - 0.49 = 1.23
0.43 u = 1.23 + 0.49
0.43 u = 1.72
1 u = 1.72 ÷ 0.43 = 4
Number of muffins baked
= 1 u + 7
= 4 + 7
= 11
Answer(s): 11
