Cathy baked some biscuits. She sold
310 of them in the morning and
114 of the remainder in the evening. If she had 156 biscuits left, how many biscuits did she bake?
| Morning |
Remainder |
Total |
| 3x2 |
7x2 |
10x2 |
| |
Evening |
Left |
|
| |
1 |
13 |
|
| 6 u |
1 u |
13 u |
20 u |
Fraction of the biscuits left after selling in the morning
= 1 -
310 =
710 Fraction of the remaining biscuits left after selling in the evening
= 1 -
114 =
1314 Fraction of the biscuits left after selling in the evening
=
1314 x
710 =
132013 u = 156
1 u = 156 ÷ 13 = 12
Total number of biscuits that Cathy baked
= 20 u
= 20 x 12
= 240
Answer(s): 240
