There were some bottles and packets. A bottle weighed 1 kg and a packet weighed 2 kg more. The total weight of the bottles was 18 kg heavier than the total weight of the packets. The number of bottles and packets were in the ratio 9 : 2. What was the total weight of the bottles and the packets?
|
Bottles |
Packets |
Total |
Heavier |
Number |
9 u |
2 u |
|
|
Value |
1 |
3 |
|
|
Total value |
9 u |
6 u |
15 u |
3 u |
Weight of 1 packet
= 1 + 2
= 3 kg
Total weight of the bottles heavier than the total weight of the packets
= 9 u - 6 u
= 3 u
3 u = 18
1 u = 18 ÷ 3 = 6
Total weight of the bottles and packets
= 9 u + 6 u
= 15 u
= 15 x 6
= 90 kg
Answer(s): 90 kg