Correct Answer - Option 3 : 900 gm
Given:
An alloy contains two metals in the ratio 7 : 3.
Difference between weights of two metals is 360 gm.
Calculation:
Let weight of two metals be 7x and 3x
Then 7x - 3x = 360 gm
⇒ 4x = 360 gm
⇒ x = 90 gm
∴ Weight of alloy = 7x + 3x = 10x
= 10 × 90 = 900 gm.