Question

decrease 65 litres in the ratio 13:8​

Answer 1

Answer:

If the ratio of a new quantity to an old quantity can be expressed as a proper fraction, then the new quantity is less than the old quantity. Applying this ratio to the old quantity is known as decreasing the old quantity in a given ratio.

Multiply the numerator and the denominator by the same number. For example, 9 times 10 equals 90 and 10 times 10 equals 100, so the new ratio is 90 out of 100. Divide the numerator and denominator of the ratio by the same number to reduce the ratio.

For example, if your mix ratio is 8:1 or 8 parts water to 1 part solution, there are (8 + 1) or 9 parts. The mixing percentage is 11.1% (1 divided by 9).

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