Working with Fractions Class 7 Long Question Answer

Working with Fractions Class 7 Long Question Answer

Working with Fractions Class 7 Long Question Answer

Question 1.

A person reads a particular book for 2[latex]\frac {1}{2}[/latex] hours everyday. If he has read the entire book in 64 days, find the number of hours spent by him in reading the entire book.

Solution:

Number of hours = 64 × 2[latex]\frac {1}{2}[/latex] hours

= 64 × [latex]\frac {5}{2}[/latex] hours

= 32 × 5 = 160 hours

Question 2.

A machine can print [latex]\frac {13}{4}[/latex] pages in one minute. Find the time required by the machine to print [latex]\frac {832}{8}[/latex] pages.

Solution:

Time required = [latex]\frac {832}{8}[/latex] ÷ [latex]\frac {13}{4}[/latex] minutes

= [latex]\frac {832}{8}[/latex] × [latex]\frac {4}{13}[/latex] minutes

= [latex]\frac{882 \times 4}{8 \times 13}[/latex] = [latex]\frac {64}{2}[/latex]

= 32 minutes.