Question

It was estimated that 52 men can complete a strip in a newly constructed highway connecting cities P and Q in 10 days. Due to an emergency, 12 men were sent to another project. How many number of days, more than the original estimate, will be required to complete the strip?

• A.
  $3days$
• B.
  $5days$
• C.
  $10days$
• D.
  $13days$

Answer 1

The correct option is A

$3days$
52 men can do in 10 days

Since 12 men were sent out

Remaining men left = 52 - 12 = 40

$Weknow{M}_1{D}_1=M_2{D}_2$

$52\times 10=40\times x$

$x=\frac{52\times 10}{40}=13\text{days}$

$Totalnumberofdaystaken=13\text{days}$

$\therefore 3daysmorethantheoriginalestimate.$