Average

131 A car reached Raipur from Somgarh in 35 min with an average speed of 69 km/h. If the average speed is increased by 36 km/h, how much time will it take to cover the same distance?

132 In the first 30 overs of a cricket game, the run rate was only 7. What should be the run rate in the remaining 20 overs to reach the target of 325 runs. ?

133 The average age of 4 members of a family is 20 yr. If youngest member is 2 years old, what was the average age of family at the time of the birth of youngest member?

134 In a class, there are 75 students and their average marks in the annual examination is 35. If the average marks of passed students is 55 and average marks of failed students is 30, then find out the number of students who failed

135 The mean weight of 34 students of a school is 42 kg. If the weight of the teacher be included, the mean rises by 400 g. Find the weight (in kg) of the teacher:

136 A cricketer played 80 innings and scored an average of 99 runs. His score in the last inning is zero run. To have an average of 100 at the end, his score in the last innings should have been

137 The average age of 14 girls and their teacher's age is 15 yr. If teacher's age is excluded, then the average reduced by 1. What is the teacher's age?

138 Five years ago, the average age of P and Q was 15 yr. Now, average age of P, Q and R is 20 yr. What whould be the age ofR after 10 yr?

139 The average age of 30 women decreases by 3 months if a new person Priyanka is included in place of a 25 yr old woman. Calculate the age of Priyanka:

140 The mean temperature of Monday to Wednesday was 37°C and of Tuesday to Thursday was 34°C. If the temperature on Thursday was 4/5 that of Monday, the temperature of Thursday was