Four boys and three girls spent an average of ₹120, out of which the boys spent an average of ₹150. What is the average amount spent by the girls?
Four boys and three girls spent an average of ₹120, out of which the boys spent an average of ₹150. What is the average amount spent by the girls?
4 लड़के और 3 लड़कियों ने औसतन 120 रुपये खर्च किए, जिसमें से लड़कों ने औसतन 150 रुपये खर्च किए। तो लड़कियों द्वारा खर्च की गई औसत राशि है |
Detailed Solution & Logic
₹. 80
Total people = 4 boys + 3 girls = 7
Average spent by all = ₹120
Total amount = $7 \times 120 = 840$
Boys:
Total spent by boys = $4 \times 150 = 600$
Girls:
Total spent by girls = $840 - 600 = 240$
Average for girls = $240 \div 3 = 80$
Final Answer: ₹80
Similar Practice Questions
The average score obtained by 64 boys and a certain number of girls
The average score obtained by 64 boys and a certain number of girls in a...
Find the average of 300, 129, 49, 120 and 102.
Find the average of 300, 129, 49, 120 and 102. 300, 129, 49, 120 और...
The average of a certain number of quantities is 45. If 5 is added to each quantity, what will be the new average?
The average of a certain number of quantities is 45. If 5 is added to...
The average of a set of 8 numbers is 36. If one number, 48, is replaced by 24, what is the new average?
The average of a set of 8 numbers is 36. If one number, 48, is...
The average of 13 numbers is 7. If each number is multiplied by 3, then what will the new average be?
The average of 13 numbers is 7. If each number is multiplied by 3, then...
Find the average of the first 122 even numbers.
Find the average of the first 122 even numbers. प्रथम 122 सम संख्याओं का औसत...
The average weight of a class of 115 students is 52.4 kg.
The average weight of a class of 115 students is 52.4 kg. If the average...