Math, asked by anasniaz7397, 11 months ago

the average cost of 3 erasers was Rs.3.45. the average cost of the first 2 erasers was Rs.3.15. find the cost of the third eraser. ​

Answers

Answered by mraiskhan12
0

Answer:

Step-by-step explanation:

Three eraser cost - two eraser cost = third cost

3.45-3.15=0.30

Answered by Snegi
1

Answer:

Rs. 4.05

Step-by-step explanation:

a+b+c÷3=3.45 (given)

a+b÷2=3.15

a+b=3.15×2

a+b=6.30

putting the value of a+b in the given equ.

6.30+c÷3=3.45

6.30+c=3.45×3

6.30+c=10.35

c=10.35-6.30

c=4.05 (answer)

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