Elitmus Exam Numerical Ability Averages

a man purchases milk for three consecutive years.in the first year,he purchases milk at the rate of rs 7.50 per litre,in the second year,at the rate of rs8.00 per litre and in the third year at rs 8.50 per litre.if he purchases milk worth rs 4080 each year,the average price of the milk per litre for the three years is how much..?

Read Solution (Total 3)

Rs. 7.97

Average price/litre = Total cost/Total quantity(in litres) = 3x4080/(4080/7.5 + 4080/8 + 4080/8.5)
=12240 / (544+510+480)
= 12240/1534
= 7.97
7 years agoHelpfull: Yes(13) No(1)

Is this question really came in Elitmus ??
6 years agoHelpfull: Yes(2) No(3)
rs.7.97914
6 years agoHelpfull: Yes(0) No(0)

Elitmus Other Question

5 members of a team are weighed consequetively and their average weight calculated after each member is weighed.if the average weight increases by one kg each time,how much heavier is the last player than the first one.? A Survey of 200 people in a community who watched at least one of the three channels- BBC, CNN and DD- showed that 80% of the people watched DD, 22% watched BBC and 15% watched CNN. If 5% of people watched DD and CNN, 10% watched DD and BBC, then what percentage of people watched BBC and CNN only ?