In an office the working hours are 9:30 AM to 4:30 PM and in between 20 minutes are spent on lunch Find the ratio of office hours to the time spent for lunch-

21 : 1

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1 : 14

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7 : 30

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30 : 7

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Solution

The correct option is A $21 : 1$
Total time in office $= 9 : 30 t o 4 : 30 = 7 h o u r s$
Ratio of two quantities can be found when they are of same units.
So, $7 h o u r s = 7 \times 60 = 420 m i n u t e s$
Hence, ratio $= \frac{420 m i n}{20 m i n} = 21 : 1$

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In an office the working hours are 9:30 AM to 4:30 PM and in between 20 minutes are spent on lunch Find the ratio of office hours to the time spent for lunch-

The correct option is A 21:1Total time in office =9:30 to 4:30=7hoursRatio of two quantities can be found when they are of same units. So, 7 hours=7×60=420 minutes Hence, ratio =420 min20 min=21:1

The correct option is A $21 : 1$
Total time in office $= 9 : 30 t o 4 : 30 = 7 h o u r s$
Ratio of two quantities can be found when they are of same units.
So, $7 h o u r s = 7 \times 60 = 420 m i n u t e s$
Hence, ratio $= \frac{420 m i n}{20 m i n} = 21 : 1$