P P Vermani, A K Bakshi and, Jyoti Bhatia Solutions for Chapter: Time and Calendar, Exercise 3: Exercise 12.3

If the value of $20$ hours $30$ mins$-$$15$ hours $20$ mins is $x$ hours $y$ mins, find the value of $y-x$.

Subtract :

$7$ hours $20$ mins$-$$10$ mins.

How many hours are there between $1 \mathrm{p}.\mathrm{m}. \mathrm{to} 3 \mathrm{p}.\mathrm{m}.$?

If there are $K$ hours between $1 \mathrm{p}.\mathrm{m}. \mathrm{to} 7 \mathrm{p}.\mathrm{m}.$, then write the value of $K$.

How many hours are there between $1 \mathrm{a}.\mathrm{m}. \mathrm{to} 4 \mathrm{p}.\mathrm{m}.$.

How many hours are there between $9 \mathrm{a}.\mathrm{m}. \mathrm{to} 6 \mathrm{p}.\mathrm{m}.$

How many hours are there between $7 \mathrm{a}.\mathrm{m}. \mathrm{to} 2 \mathrm{p}.\mathrm{m}.$

How many hours are there between $10 \mathrm{p}.\mathrm{m}. \mathrm{to} 6 \mathrm{a}.\mathrm{m}.$