Question

question-
The ratio of copper and aluminium in an alloy is 3:5.
If the weight of copper is 12.8 kg in the alloy, find the
weight of aluminium in the alloy.​

Answer 1

Answer:8 kg

Step-by-step explanation:Let the two weights be 3x and 5x respectively.

Therefore,3x+5x=12.8

8x=12.8

x=12.8/8

x=1.6

Aluminium=1.6×5=8 kg