Question

An alloy weighing 50kg is made of 60% lead. How many kilograms of lead must be added to the alloy in order to increase the lead content to 75%​

Answer 1

Answer:

7.5 kg

Step-by-step explanation:

Amount of lead in Alloy = 60 × 50/100 = 30 kg

Now to increase the lead content to 75%

The amount is = 75× 50/100 = 37.5

Required amount = 37.5 - 30

= 7.5 kg

Thus, 7.5 kg of lead must be added to the alloy to increase the lead content to 75%. ​

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