Chapter 7.8, Problem 1P

To determine

To find: the part of typing that $\text{ rita}$ can do in 2 hours.

Answer to Problem 1P

work done in $\text{2}$ hours is $\frac{2}{3}$ and work done in $\text{x}$ hours is $\frac{\text{x}}{\text{3}}$.

Explanation of Solution

Given:

Rita take $3$ hour to type a report.

Concept used:

Rate of the work:

Ratio of work to the time interval with changes in time rate of work will change.

  $\text{work rate=}\frac{\text{work done}}{\text{time}}$.

  $\text{work rate}\times \text{time=workdone}$.

Calculation:

If it take her $\text{3}$ hours to type a report, she get $\frac{1}{3}$ done per hour so her work rate is $\frac{1}{3}$.

Therefore: table to find the work done:

Work rate $\times$Time=work done
$\frac{1}{3}$	$2$	$\frac{2}{3}$
$\frac{1}{3}$	$\text{x}$	$\frac{\text{x}}{\text{3}}$

Hence, the work done in $\text{2}$ hours is $\frac{2}{3}$ and work done in $\text{x}$ hours is $\frac{\text{x}}{\text{3}}$.