Ahmad has 4 bags and 5 packets of erasers. He has a total of 212 erasers. Each packet contains 10 more erasers than each bag. How many erasers are there in each packet?
| |
Bags |
Packets |
Total |
| Number |
4 |
5 |
|
| Value |
1 u |
1 u + 10 |
|
| Total value |
4 u |
5 u + 50 |
9 u + 50 |
Number of erasers in each bag = 1 u
Number of erasers in each packet = 1 u + 10
Total number of erasers in the bags = 4 x 1 u = 4 u
Total number of erasers in the packets = 5(1 u + 10) = 5 u + 50
Total number of erasers
= 5 u + 4 u + 50
= 9 u + 50
9 u + 50 = 212
9 u = 212 - 50
9 u = 162
1 u = 162 ÷ 9 = 18
Number of erasers in each packet
= 1 u + 10
= 18 + 10
= 28
Answer(s): 28
