A factory produces two product `P_1a n dP_2` . Each of the product `P_1` requires 2 hrs for moulding, 3 hrs for grinding and 4 hrs for polishing, and each of the product `P_2` requires 4 hrs for moulding, 2 hrs for grinding and 2 hrs for polishing. The factory has moulding machine available for 20 hrs, grinding machine for 24 hrs polishing machine available for 13 hrs. The profit is Rs. 5 per unit of `P_1` and Rs 3 per unit of`P_2` and the factory can sell all that it produces . Formulate the problem as a linear programming problem to maximize the profit.

A firm manufactures two products A and B. Each product is processed on two machines M_1a n dM_2 . Product A requires 4 minutes of processing time on M_1 and 8 min. on M_2 ; product B requires 4 minutes on M_1 and 4 min. on M_2 . The machine M_1 is available for not more than 8 hrs 20 min. while machine M_2 is available for 10 hrs. during any working day. The products A and B are sold at a profit of Rs. 3 and Rs. 4 respectively. Formulate the problem as a linear programming problem and find how many products of each type should be produced by the firm each day in order to get maximum profit.

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

A reaction is 50 % complete in 2 hrs and 75% complete in 4 hrs what is the order of the reaction.

A first order reaction has half life of 14.5 hrs. What percentage of the reactant will remain after 24 hrs ?

A bus leaves at 12.25 noon and reaches destination at 10.45 am. The duration of the journey is (a) 22 hrs 20 min (b) 22 hrs 40 min (c) 24 hrs 20 min (d) 24 hrs 40 min

Rama reads 1/4 of a short novel in 1 hr. Then The part of the book he will read in 2 1/2 hr is ........?

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