Tenzin drinks 1/2 glass of milk every day. How many glasses of milk. Class 7

Tenzin drinks 1/2 glass of milk every day. How many glasses of milk. Class 7

Question 1.

Tenzin drinks [latex]\frac {1}{2}[/latex] glass of milk every day. How many glasses of milk does he drink in a week? How many glasses of milk did he drink in the month of January? Class 7

Solution:

Tenzin drinks [latex]\frac {1}{2}[/latex] glass of milk every day.

So, in 7 days, he drinks 7 × [latex]\frac {1}{2}[/latex] glasses of milk

= [latex]=\frac{7 \times 1}{2}[/latex] = [latex]\frac {7}{2}[/latex] glasses

= 3 [latex]\frac {1}{2}[/latex] glasses of milk

January is a month of 31 days

So, in January he will drink 31 × [latex]\frac {1}{2}[/latex] glasses

= [latex]\frac{31 \times 1}{2}[/latex] = [latex]\frac {31}{2}[/latex] = 15 [latex]\frac {1}{2}[/latex] glasses of milk.

Question 2.

A team of workers can make 1 km of a water canal in 8 days. So, in one day, the team can make ______ km of the water canal. If they work 5 days a week, they can make _____ km of the water canal in a week. Class 7

Solution:

In 8 days, water canal built = 1 km

So, in 1 day, water canal = [latex]\frac {1}{8}[/latex] km

In 5 days, they can make 5 × [latex]\frac {1}{8}[/latex] km

= [latex]\frac{5 \times 1}{8}[/latex] km = [latex]\frac {5}{8}[/latex] km water canal.

Question 3.

Manju and two of her neighbours buy 5 litres of oil every week and share it equally among the 3 families. How much oil does each family get in a week? How much oil will one family get in 4 weeks? Class 7

Solution:

Oil bought by 3 families in a week

= 5 litres.

So, share of each family in a week

= 5 × [latex]\frac {1}{3}[/latex] = [latex]\frac {5}{3}[/latex] litres.

Therefore, share of one family in 4 weeks

= 4 × [latex]\frac {5}{3}[/latex] = [latex]\frac{4 \times 5}{3}[/latex]

= [latex]\frac {20}{3}[/latex] litres = 6 [latex]\frac {2}{3}[/latex]litres.