Question

4 boys and 3girls spent rs120 on the average of which boys spend rs 150 on the average then the average amount spent by girls?

Answer 1

Answer:

45

Step-by-step explanation:

Average = Money spend by boys + Money spend by girls / 2

Let money spend by girls = X

Then:-

150+x/2=120

75+x=120

x = 120 - 75 =

45

SO: Answer = 45

Answer 2

Answer:

Rs. 80

Step-by-step explanation:

4 boys and 3 girls, total 7

Average spent= Rs 120 => total spent= 7* Rs. 120=Rs. 840

Boys average = Rs. 150 => boys total = 4* Rs. 150= Rs. 600

Girls total = Rs. 840 - Rs. 600 = Rs. 240

Girls average = Rs. 240/3= Rs. 80

Average amount spent by girls is Rs. 80