Mrs Pang baked 8 biscuits more than strudels. Each biscuit needed 0.07 kg of flour while each strudel needed 0.5 kg of flour. She used 2.45 kg more flour for the strudels than for the biscuits. How many biscuits did Mrs Pang bake?
| |
Strudels |
Biscuits |
Difference |
| Number |
1 u |
1 u + 8 |
|
| Value |
0.5 |
0.07 |
|
| Total value |
0.5 u |
0.07 u + 0.56 |
0.43 u - 0.56 |
Amount of flour needed for biscuits
= 0.07 x (1 u + 8)
= 0.07 u + 0.56
Amount of more flour for the strudels than the biscuits
= 0.5 u - (0.07 u + 0.56)
= 0.5 u - 0.07 u - 0.56
= 0.43 u - 0.56
0.43 u - 0.56 = 2.45
0.43 u = 2.45 + 0.56
0.43 u = 3.01
1 u = 3.01 ÷ 0.43 = 7
Number of biscuits baked
= 1 u + 8
= 7 + 8
= 15
Answer(s): 15
