1.

Find the ratio of 1/2 hour to 45 minute

Answer»

\frac{1}{2} \: hrs  \:  \: 45 \: min

60min = 1hrs

1min =  \frac{1}{60} hrs

45 \: min =  \frac{1}{60}  \times 45

=  \frac{3}{4} hrs

now  \:  \frac{1}{2} . \frac{3}{4}

\frac{1}{2}  \times  \frac{4}{3}

=2:3

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