If an alloy contains copper and silver in the ratio 3:7, then the percentage quantity of silver to the alloy is?
- 90%
- 60%
- 70%
- None of these
Explanation
Given:
Copper : Silver = 3 : 7
Step 1: Find total parts
3+7= 10
Step 2: Silver = 7 parts
Silver percentage= 7/10 x100
Related MCQs
- 11
- 12
- 13
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 20%
- 15%
- 10%
- None of these