Question 29 (A) On a particular day, 50000 people attended a Cricket Test Match between India and Australia in Sydney Cricket Ground. Let x be the number of adults attended the cricket match and y be the number of children attended the cricket match. Cost of an adult ticket was ₹1000 while cost of a child ticket was ₹200. On that day Revenue earned by selling all 50,000 tickets, was ₹4,20,00,000. Find how many adults and how many children attended the cricket match?Given
Number of adults attending cricket match = x
Number of children attending cricket match = y
Now,
Total 50,000 people attended the match.
So, we can write
Number of adults + Number of children = 50,000
x + y = 50,000
Also, Cost of an adult ticket was ₹1000 while cost of a child ticket was ₹200. And, total revenue ₹4,20,00,000
Now,
Revenue earned by selling 1 adult ticket = ₹ 1,000
Revenue earned by selling x adult tickets = ₹ 1,000 × x
And,
Revenue earned by selling 1 child ticket = ₹ 200
Revenue earned by selling y child tickets = ₹ 200 × y
Also, total revenue ₹4,20,00,000. So, we can write
Revenue from adults + Revenue from children = ₹4,20,00,000
₹ 1,000 × x + ₹ 200 × y = ₹4,20,00,000
1000x + 200y = 4,20,00,000
Dividing by 200 both sides
1,000𝑥/200+200𝑦/200=4,20,00,000/200
5x + y = 2,10,000
Now, our equations are
x + y = 50,000 …(1)
5x + y = 2,10,000 …(2)
Doing (2) – (1)
(5x + y) – (x + y) = 2,10,000 – 50,000
5x – x + y – y = 1,60,000
4x = 1,60,000
x = 1,60,000/4
x = 40,000
Putting value of x in (1)
x + y = 50,000
40,000 + y = 50,000
y = 50,000 – 40,000
y = 10,000
Therefore, Number of adults attended the match is 40,000 and number of children attended is 10,000
Made by
Davneet Singh
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 15 years. He provides courses for Maths, Science and Computer Science at Teachoo
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