HARD
7th ICSE
IMPORTANT
Earn 100

The mean height of 32 boys in a class was 135 cm. When two boys left, the mean become 136 cm. Find the combined height of the two boys who left.

50% studentsanswered this correctly

Important Questions on Averages

HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 9
The average daily temperature for the first 20 days of a month was 27.5°C. The average daily temperature for the next 10 days was 29°C. Find the average daily temperature for the month.
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 10
The average weight of 25 fish in an aquarium was 70 g. 10 fish with average weight 85 g were transferred to another aquarium. What would be the average weight of the leftover fish?
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 1
An insect ran 40 cm in 4 seconds and 32 cm in 5 seconds. If its average speed for the whole distance is k cm/s, then find the value of k.
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 2
A bird flew 60 m in 15 seconds. On seeing an eagle it flew 65 m in 10 seconds and escaped. Find the bird's average speed of flight.
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 3
A bus covered a distance of 45 km in 2 hours. On the return journey it covered the same distance in 1 hour 45 minutes. Find the average speed for the entire trip.
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 4
A ship sailed 75 knots in 4 hours and returned in the same route in 3 hours 30 minutes. Find it's average sailing speed.
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 5
A train of length 132 m passed a signal pole in 13 seconds. On the return journey it passed the pole in 11 seconds. Find its speed for both ways put together.
HARD
7th ICSE
IMPORTANT
ICSE Skills In Mathematics>Chapter 13 - Averages>EXERCISE>Q 6
Rajiv ran across a bridge 175 m long in 26 seconds. He ran back and crossed the bridge in 24 seconds. Find his average speed.