Q59 of 89 Page 120

An office opens at 9 a.m. and closes at 5.30 p.m. with a lunch break of 30 minutes. What is the ratio of lunch break to the total period in the office?

Lunch break period = 30 minutes


9 a.m. to 5.30 p.m. is 7 hours and 30 minutes


1 hour is 60 minutes


⇒ 7 hours = 7 × 60 = 540 minutes


Total period in office = 540 + 30 = 570 minutes


Therefore, ratio of lunch break to the total period in the office =


⇒ ratio = =


Dividing numerator and denominator by 3 we get


⇒ ratio =


Therefore, ratio of lunch break to the total period in the office is 1:18


More from this chapter

All 89 →
57

A rectangular sheet of paper is of length 1.2m and width 21cm. Find the ratio of width of the paper to its length.

 58

A scooter travels 120km in 3 hours and a train travels 120km in 2 hours. Find the ratio of their speeds.

(Hint : Speed = )

 60

The shadow of a 3m long stick is 4m long. At the same time of the day, if the shadow of a flagstaff is 24m long, how tall is the flagstaff?

 61

A recipe calls for 1 cup of milk for every cups of flour to make a cake that would feed 6 persons. How many cups of both flour and milk will be needed to make a similar cake for 8 people?