An alloy of gold and silver weighs 50 g. It contains 80% gold. How much gold should be added to the alloy so that percentage of gold is increased to 90? `30\ g` b. `40` g c. `50\ g` d. `60\ `

An alloy of gold and silver weighs 50 g.It contains 80% gold.How much gold should be added to the alloy so that percentage of gold is increased to 90?30backslash g b.40 g c.50backslash g d.60backslash

In 50 gm alloy of gold and silver , the gold is 80% by weight . How much gold should be mixed to this alloy so that weight of gold would become 95% ?

50 kg of an alloy of lead and tin contains 60% lead. How much lead must be melted into it to make an alloy containing 70% lead?

50 kg of an alloy of lead and tin contains 60% lead. How much lead must be melted into it to make an alloy containing 70% lead?

300g of salt solution has 40% salt in it. How much salt should be added to make it 50% in the solution?

300g of salt solution has 40% salt in it. How much salt should be added to make it 50% in the solution?

600 g of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?