Question
A superbike takes 84 minutes to cover 112 km. If the
speed of the superbike is decreased by 20 km/h, then find the time taken by the superbike to cover the same distance.Solution
Speed of the superbike = (112/84) x 60 = 80 km/h New speed of the superbike = 80 - 20 = 60 km/h So, required time = (112/60) x 60 = 112 minutes or 1 hour and 52 minutes
The total number of students in class X and Y is 72. The number of students in X is 40% more than that in Y. The average marks of students in Y are 50% ...
The average temperature for a week is recorded as 35.4°C. The difference between the highest and lowest temperatures during the week is 30°C. Addition...
The average of five even numbers is 62. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
The average salary of 12 employees in a company is Rs.45,000 per year. When two new employees, Alice and Bob, join the company, their salaries being in ...
The average age of A and B is 15 years. If A is to be replaced by C, the average would be 14 years. The average age of C and A is 16 years. Find the age...
In a tournament, the average score of eight batsmen in the Chennai team is 80. If the highest three scores are not considered, th...
Average of 8 numbers is 80. If average of first four and last two numbers is 80 and 60, respectively then find the fifth number given that ratio of fift...
A batsman had an average of 39 runs in 35 innings. In his next 5 innings, he scored 100, 85, 90, 80, and 60. What is his updated average?
Rs. 5040 was distributed among W, X, Y, and Z in the ratio 2:5:4:3 respectively. After that, X gave an amount equal to 80% of the average of W and Z's i...
The average weight of 70 notebooks kept in a box is 7 kg. When a new notebook is placed in the box, then the average is 7.1kg. Specify the weight of the...
Relevant for Exams:
