Question
A car is travelling at a constant rate of 42 km/h. The
distance travelled by car from 9:40 am to 12:00 pm is:Solution
Let the distance be x km. And time taken by car = 2hr 20min => 2(20/60) = 2(1/3) = 7/3 hrs Distance = Speed × Time => (7/3) × 42 = 98 km
The average weight of 10 students is 45 kg. If a new student joins, the average becomes 46 kg. Find the weight of the new student.
The mean of a set of 15 numbers is 40. If the mean of the initial 5 numbers in this set is represented by the expression (12x + 10), and the mean of the...
The average of the first and second numbers is 45, while the average of the second and third numbers is 55. If the sum of the first and third numbers is...
Average of five two-digit consecutive even natural numbers is (m + 9), and the average of five two-digit consecutive odd natural numbers is (n - 6). Whe...
The average weight of 4 persons is 36 kg. The heaviest person’s weight is 26 kg more than the lightest person’s weight. If the average weight of the...
The average cost price of 13 pens (having equal cost price) decreased by Rs.3, when one of the pen is replaced by a new pen having cost price of Rs.60. ...
In a family of 10, the men eat on average 70kg of food and women eat on an average 45kg of food. The men and women are equal in number. A woman j...
Daksh bought 21 notebooks for Rs.1260 from shop A and 14 notebooks for Rs.1190 from shop B. What is the average price he paid per book?
A village experienced an average rainfall of 150 cm during the first five days of a week, while the last five days recorded an average of 155 cm. If the...
The average weight of 4 persons is 46 kg. The heaviest person’s weight is 28 kg more than the lightest person’s weight. If the average weight of the...
Relevant for Exams:
