Question

a water purifying device has a flow rate of 10 1/2 liters per hour. at this rate, how many liters will be produce in 1 1/4 hours? ​

Answer 1

Answer:

10 1/2 = 21/2

1 1/4 = 5/4

21/2× 5/4

105/8 liters

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Answer 2

Given,

Flow rate of water purifying device $\[ = \frac{1}{2}litre\,per\,hour\]$

Solution,

Water purify in 1 hour $\[ = \frac{1}{2}litre\]$

Water purify in $\[\frac{11}{4}hour\]$,

$\[\begin{array}{l} = \frac{1}{2} \times \frac{{11}}{4}\\ = \frac{{11}}{8}\\ = 1\frac{3}{8}litre\end{array}\]$

Hence water purify in $\[\frac{{11}}{4}\]$ hour is $\[1\frac{3}{8}litre\]$.