There were some packets and bottles. A packet weighed 4 kg and a bottle weighed 3 kg more. The total weight of the packets was 80 kg heavier than the total weight of the bottles. The number of packets and bottles were in the ratio 9 : 4. What was the total weight of the packets and the bottles?
|
Packets |
Bottles |
Total |
Heavier |
Number |
9 u |
4 u |
|
|
Value |
4 |
7 |
|
|
Total value |
36 u |
28 u |
64 u |
8 u |
Weight of 1 bottle
= 4 + 3
= 7 kg
Total weight of the packets heavier than the total weight of the bottles
= 36 u - 28 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Total weight of the packets and bottles
= 36 u + 28 u
= 64 u
= 64 x 10
= 640 kg
Answer(s): 640 kg