A’s one day work = 1/15 part B’s one day work = 1/6 - 1/15 = (5-2)/30 = 1/10 part A’s one day work + B’s half day work = 1/15 + 1/20 = (4+3)/60 = 7/60 part Hence, A and B can together can do the work in = 60/7 = 8*4/7 days.
A sphere has a volume of 288π cubic units. What is the diameter of the sphere?
A cylindrical water tank has a height of 12 meters and a radius of 3 meters. How many liters of water can the tank hold? (Use π = 3.14 and 1 cubic mete...
Two alloys are made by mixing copper and zinc in the ratio of 3:2 and 5:3, respectively. If equal quantities of the alloys are melted to form a third al...
In 2023, if all teams worked together to complete a project that requires 500 total worker-days, how many days would they take to complete the project?
The ratio of ages of A and B is 4:3. If A is 5 years older than B, find the age of B.
55-litres of paint is added to a mixture of paint and oil in the ratio 3:5. The ratio of paint and oil in the resulting mixture is 4:3. Find the total v...
In an exam Dinesh scored 362 marks and Shivam got 68 % marks in the same exam which is 12 marks more than Dinesh. If the minimum passing marks in the ex...
Two poles are 30 meters and 50 meters high, and the distance between their bases is 20√3 meters. Find the angle of elevation of the top of the taller ...
A rectangular garden is 20 m long and 15 m wide. If a path of width 2 m is built around the garden, what is the area of the path?
The length of a rectangle is increased by 20% and the width is decreased by 10%. What is the percentage change in the area of the rectangle?
