Mrs Sim baked 7 muffins more than strudels. Each muffin needed 0.05 kg of flour while each swiss roll needed 0.4 kg of flour. She used 1.75 kg more flour for the strudels than for the muffins. How many muffins did Mrs Sim bake?
| |
Strudels |
Muffins |
Difference |
| Number |
1 u |
1 u + 7 |
|
| Value |
0.4 |
0.05 |
|
| Total value |
0.4 u |
0.05 u + 0.35 |
0.35 u - 0.35 |
Amount of flour needed for muffins
= 0.05 x (1 u + 7)
= 0.05 u + 0.35
Amount of more flour for the strudels than the muffins
= 0.4 u - (0.05 u + 0.35)
= 0.4 u - 0.05 u - 0.35
= 0.35 u - 0.35
0.35 u - 0.35 = 1.75
0.35 u = 1.75 + 0.35
0.35 u = 2.1
1 u = 2.1 ÷ 0.35 = 6
Number of muffins baked
= 1 u + 7
= 6 + 7
= 13
Answer(s): 13
