Question

Calculate the amount of 90% and 50% alcohol should be mixed to get 75% alcohol?​

Answer 1

Answer:

75% alcohol we obtained by mixing 90% and 50%

Explanation:

let’s assume we have 50ml of 90% alcohol solution, and 50ml of 50% alcohol solution.

90% of 50 is 45, so in the first solution we have 45ml of alcohol.---(i)

50% of 50 is obviously 25. So in the second solution we have 25ml of alcohol.----(ii)

Combing(i) and (ii) we get

75ml of alcohol in 100ml of solution- so you’ve made a 75% solution of alcohol

Answer 2

Answer:

The correct answer of this question  is 75ml of alcohol in 100ml of solution equals a 75 percent alcohol solution.

Explanation:

Given -  The amount of 90% and 50% alcohol should be mixed to get 75% alcohol.

To Find - Calculate the amount of 90% and 50% alcohol should be mixed to get 75% alcohol ?

We got 75 percent alcohol by combining 90 percent and 50 percent.

50ml of a 90% alcohol solution and 50ml of a 50% alcohol solution.

90 percent of 50 equals 45, so the first solution contains 45ml of alcohol—-(i)

50 percent of 50 is clearly 25. So we have 25ml of alcohol in the second solution. ——(ii)

And we combine I and (ii), we get

75ml of alcohol in 100ml of solution equals a 75 percent alcohol solution.

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