Question
Efficiency of A is 25% more than B and B takes 30 days
to complete a piece of work. A started the work alone and then B joined him 4 days before actual completion of the work. For how many days A worked alone?Solution
Efficiency Ratio = A : B = 125 : 100 = 5 : 4 Days Ratio = A : B = 4 : 5 B takes 30 days to complete a piece of work. => 5’s = 30 => 1’s = 6 => 6’s = 24 So A can complete the work in 24 days. Total units of work = 120 (LCM of 24,30) A = 5 unit B = 4 unit A and B worked for 4 days = 4 × (5+4) = 36 units Remaining work = 120 – 36 = 84 units Hence, A worked alone for = 84/5 days.
The pie chart below represents the degree distribution of employees across five different offices, with a total of 4500 employees...
A sum of money doubles itself in 5 years at simple interest. In how many years will it become 5 times itself at the same rate of interest?
The ratio of milk and water in a mixture of 28 litres is 4 : 3. Find the quantity of milk in the mixture?
A rectangular field has a length of 120 meters and a width of 80 meters. A pathway 2 meters wide is constructed along the inside edge of the field, all ...
Determine the area of the largest circle that can be inscribed inside a square with a side length of 28 cm? (Use π = 22/7)
Determine the mean proportion of 72 and 50.
What does 'A' in ANSI stand for ____________.
The square roots of the complex number z=3+4i are:
If A is an orthogonal matrix, then A⁻ᵀ is
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...
Relevant for Exams:
