Elijah had some bags of mini cupcakes and some packets of chocolate bars. Each bag contained 5 mini cupcakes and each packet contained 7 chocolate bars. The total number of bags of mini cupcakes and packets of chocolate bars that he had was 20. He had 80 less mini cupcakes than chocolate bars. How many bags of mini cupcakes did Elijah have?
Number of packets
of chocolate bars |
Number of
chocolate bars |
Number of bags
of mini cupcakes |
Number of
mini cupcakes |
Less mini cupcakes
than chocolate bars |
20
|
20 x 7 =
140 |
0
|
0 x 5 =
0 |
140 - 0 =
140 |
19
|
19 x 7 =
133 |
1
|
1 x 5 =
5 |
133 - 5 =
128 |
15
|
15 x 7 =
105 |
5
|
5 x 5 =
25 |
105 - 25 =
80 |
Total number of packets of chocolate bars if all are chocolate bars
= 20 x 7
= 140
Big difference between the total number of chocolate bars and mini cupcakes
= 140 - 80
= 60
Small difference between the number of chocolate bars in one packet and the number of mini cupcakes in one bag
= 140 - 128
= 12
Number of bags of mini cupcakes
= 60 ÷ 12
= 5
Answer(s): 5
