Question
βAβ and βBβ can do a piece of work in 12 days
and 15 days, respectively. If they started the work together and worked on it for 2 days, then find the time taken by βBβ alone to complete the remaining work.Solution
Let total amount of work be 60 unitsΒ Efficiency of βAβ = 60/12 = 5 units/day Efficiency of βBβ = 60/15 = 4 units/day Amount of work done by βAβ and βBβ together in 2 days = (5 + 4) Γ 2 = 18 units Time taken by B to complete remaining work = (60 β 18)/4 = 10.5 days
Solve for x in the equation: 3(x + 2) + 2(2x - 5) = 5x + 9

If x = 19, then the value of x5 - 20x4 + 20x3 - 20x2 + 20x - 1 is
Given a triangle with two sides measuring 12 cm and 16 cm, which of the following cannot be a possible length for the third side?
The mean age of 30 students was calculated as 15 years. However, it was later discovered that one student's age was mistakenly entered as 15 years inste...
In a triangle ABC, a point D lies on AB and points E and F lie on BC such that DF is parallel to AC and DE is parallel to AF. If BE = 4 cm. EF = 6cm. th...
If a = 32, b = c = 31, then find the value of a 3 Β + b 3 Β + c 3 Β β 3abc.
If x3 + y3 = 9 and x + y=3 then the value of x4 + y4 is:
105, 111, 123, 141, ?, 195
Let {x + (1/x)} = 4, then Determine the value of {xΒ² + (1/xΒ²)}