There were some bottles and packets. A bottle weighed 2 kg and a packet weighed 1 kg more. The total weight of the bottles was 72 kg heavier than the total weight of the packets. The number of bottles and packets were in the ratio 9 : 4. What was the total weight of the bottles and the packets?
|
Bottles |
Packets |
Total |
Heavier |
Number |
9 u |
4 u |
|
|
Value |
2 |
3 |
|
|
Total value |
18 u |
12 u |
30 u |
6 u |
Weight of 1 packet
= 2 + 1
= 3 kg
Total weight of the bottles heavier than the total weight of the packets
= 18 u - 12 u
= 6 u
6 u = 72
1 u = 72 ÷ 6 = 12
Total weight of the bottles and packets
= 18 u + 12 u
= 30 u
= 30 x 12
= 360 kg
Answer(s): 360 kg