Ourselves 3.( c) 3 hrs 24 min ÷ 12 = How many hours and mins ?

Ourselves 3.(b) 7 hrs 13 min × 12 = How many hours and mins ?

Ourselves 3. (a) 3 hrs 26 min × 4 = How many hours and mins?

Ourselves 3. (d) 15 hrs ÷ 12 = How many hrs and mins ?

3. (g) 2 hrs 32 min 41 sec × 3 = How many hours, min, sec?

3. (f) 5 hrs 10 min 4 sec ÷ 4 = How many hours, min, sec ?

Ourselves 3. (e ) 6 hrs 18 min ÷ 9 = ?? hours ? mins

3 hrs ÷ 12 - find value in hrs and min.

I learnt to bind book in my school. I found that it takes 1 hr. 15 min to bind I book. Let me find how many hours and mins I would take to bind 7 books.

Express the following quantities in ratio and identify the ratio of greater inequality and ratio of lesser inequality. (vi) 1 hr 24 mins and 6 hrs 18 min.

A manufacturer produces nuts and bolts. It takes 1 hour of worl in machine A and 3 hours on machine B to produce a package of nuts. It take 3 hours on machien A and 1 hour on machine B to produce a package of bolts. He earns a profit of Rs. 17.50 per package on nuts and Rs. 7.00 per package on bolts. How many packages of each should be produced each day so as to maximise bis profit, if he operates his machines for at the most 12 hours a day?