There were some bottles and packets. A bottle weighed 3 kg and a packet weighed 1 kg more. The total weight of the bottles was 45 kg heavier than the total weight of the packets. The number of bottles and packets were in the ratio 7 : 3. What was the total weight of the bottles and the packets?
|
Bottles |
Packets |
Total |
Heavier |
Number |
7 u |
3 u |
|
|
Value |
3 |
4 |
|
|
Total value |
21 u |
12 u |
33 u |
9 u |
Weight of 1 packet
= 3 + 1
= 4 kg
Total weight of the bottles heavier than the total weight of the packets
= 21 u - 12 u
= 9 u
9 u = 45
1 u = 45 ÷ 9 = 5
Total weight of the bottles and packets
= 21 u + 12 u
= 33 u
= 33 x 5
= 165 kg
Answer(s): 165 kg