Question
What is the work to be done to increase the velocity of
a car from 30 km h⁻¹ to 60 km h⁻¹ if the mass of the car is 1500 kg?Solution
Using the work-energy theorem, the work done is equal to the change in kinetic energy.
The ratio of the male to female employees in the company in 2015 was 5:4, respectively. In 2016, the male employees and female employees increased by 18...
In an office, the ratio of the number of males to number of females is 13:9. If 3 males joined the class and 7 females left the class, then the ratio of...
Two numbers are respectively 30% and 40% more than a third number. Find the ratio of two numbers.
- In a company, 60% of the number of girls is equal to two - third of the total number of boys. When 40 new girls joined the company, then 25% of the number ...
The ratio of A to B is 3: 4 and that of B to C is 1: 2. If B equals 720, A equals
- If the mean proportion of 3.6 and 1.6 is 'k', then find the value of '5k'.
What is the fourth proportion of 13, 20 and 26?
If A varies directly as B and inversely as C and A = 8, B = 2 and C = 5, what is the value of A when B = 6 and C = 5?
A sum of Rs. 720 is divided among X, Y and Z such that X gets Rs. 124 more than Y. Y gets Rs. 64 more than Z. Find the share of Z?
In an office, the ratio of the number of males to number of females is 11:7. If 2 males joined the class and 6 females left the class, then the ratio of...
