Eva baked some cookies. She sold
310 of them in the morning and
114 of the remainder in the evening. If she had 78 cookies left, how many cookies did she bake?
| Morning |
Remainder |
Total |
| 3x2 |
7x2 |
10x2 |
| |
Evening |
Left |
|
| |
1 |
13 |
|
| 6 u |
1 u |
13 u |
20 u |
Fraction of the cookies left after selling in the morning
= 1 -
310 =
710 Fraction of the remaining cookies left after selling in the evening
= 1 -
114 =
1314 Fraction of the cookies left after selling in the evening
=
1314 x
710 =
132013 u = 78
1 u = 78 ÷ 13 = 6
Total number of cookies that Eva baked
= 20 u
= 20 x 6
= 120
Answer(s): 120
