Q10 of 32 Page 242

If x + 1 men will do the work in x + 1 days, find the number of days that (x + 2) men can finish the same work.

Given: Number of days required for x+1 men to do the work = x+1

To find: Number of days required for x+2 men to do the work


Formula:


Substituting x1 = x+1, y1 = x+1 x2 = x+2 in the formula,






) (



------------


0 +1


Gives y2 = days


∴ Number of days required for x+2 men to complete the work is days


More from this chapter

All 32 →
8

A School has 8 periods a day each of 45 minutes’ duration. How long would each period become, if the school has 6 periods a day? (assuming the number of school hours to be the same)

 9

If z varies directly as x and inversely as y. Find the percentage increase in z due to an increase of 12% in x and a decrease of 20% in y.

 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


 1

Rice costing Rs 480 is needed for 8 members for 20 days. What is the cost of rice required for 12 members for 15 days?