There were some packets and bottles. A packet weighed 3 kg and a bottle weighed 1 kg more. The total weight of the packets was 21 kg heavier than the total weight of the bottles. The number of packets and bottles were in the ratio 5 : 3. What was the total weight of the packets and the bottles?
|
Packets |
Bottles |
Total |
Heavier |
Number |
5 u |
3 u |
|
|
Value |
3 |
4 |
|
|
Total value |
15 u |
12 u |
27 u |
3 u |
Weight of 1 bottle
= 3 + 1
= 4 kg
Total weight of the packets heavier than the total weight of the bottles
= 15 u - 12 u
= 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Total weight of the packets and bottles
= 15 u + 12 u
= 27 u
= 27 x 7
= 189 kg
Answer(s): 189 kg