A dealer purchased 125 colour television sets. If the cost of each set is Rs. 19820, determine the cost of all sets together.

A dealer purchased 139 VCRs. If the cost of each set is Rs. 24350, find the cost of all the sets together.

The cost price of 23 TV sets Rs. 570055. Find the cost of each such set.

The cost price of 23 colour television sets is Rs. 570055. Determine the cost price of each TV set if each costs the same.

A businessman purchased 30TV sets in Rs300000. If the average cost of 15TV sets is Rs9000, then find out the average cost of remaining TV sets.

The cost price of 24 radio sets is Rs 18720. Find the cost price of one radio set if each costs the same.

A manufacturing company makes two types of television sets, one is black and white and the other is colcoured. The company has resources to make atmost 300 sets a week. It takes Rs.1800 to make a black and white set and Rs.2700 to make a colured set. The company can spend not more thatn Rs.648000 a week to make television sets. if it makes a profit of Rs.510 per black and white set and Rs.675 per coloured set. how many sets of each type should be produced so that the company has maximum profit?

In a large metropolitan area, the probabilities are .87,.36,.30 that a family (randomly chosen for a sample survey) owns a colour television set, a black and white television set, or both kinds of sets. What is the probability that a family owns either anyone or both kinds of sets ?