Question

78. Four tickets for movie A and five tickets for movie B cost 31540 but five tickets for movie A
and four tickets for movie B cost 31460. What is the cost of the tickets for movie B?
(1) 3450
(2) 2400
(3) 3333.34
(4) 206.67​

Answer 1

Answer:

ticket for movie B cost is 3450 each

Step-by-step explanation:

4a + 5b = 31540 equation (1)

5a + 4b = 31460 equation (2)

multiply equation (1) with 5 and equation (2) with 4

20a + 25b = 157700 equation (3)

20a + 16b = 125840 equation (4)

subtract (3) - (4) we get

9b = 31860

b = 31860/9

b = 3450

the ticket for movie B is Rs. 3450 each

Hope you get your answer