Question

please find it attached i need step by step solutions

Answer 1

Answer:

copper weighs 72 g and tin 8 g

Step-by-step explanation:

90/100=x/80

90*80/100=x

x=9*8

x=72

Answer 2

Step-by-step explanation:

Bronze is an alloy of copper=90%

90%of 80 gram of Bronze will contain 90% Copper

90/100×80 gram

9×8

= 72 gram

So, 80 gram of Bronze will contain 72 gram Copper