Q2 of 32 Page 246

10 men can lay a road 75 km. long in 5 days. In how many days can 15 men lay a road 45 km. long?

Given: Number of days required for 10 men to lay 75km road = 5 days

To find: Number of days required for 15 men to lay 45km of road.


Number of days required for 1 man to lay 75km = = 7.5


Number of days required for 1 man to lay 1km = = 0.1


Number of days required for 15 men to lay 1km = 15x0.1 = 1.5


Number of days required for 15 men to lay 45km = 1.5x45 = 67.5


∴ Number of days required for 15 men to lay 45km is 67.5 days


More from this chapter

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11

Given a rectangle with a fixed perimeter of 24 meters if we increase the length by 1m the width and area will vary accordingly. Use the following table of values to look at how the width and area vary as the length varies.

What do you observe? Write your observations in your note books


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