Question
βMβ alone can complete a work in 18 days. βNβ is
50% as efficient as βMβ. How long will they take to complete the work together?Solution
ATQ,
Let the efficiency of βMβ = 6x units/day
Then, total work = 6x Γ 18 = 108x units
Efficiency of βNβ = 6x Γ 0.5 = 6x Γ (1/2) = 3x units/day
So, combined efficiency of βMβ and βNβ = 6x + 3x = 9x units/day
So, time taken by βMβ and βNβ together to complete the work = 108x / 9x = 12 days
A cone has a base radius of 6 cm and a height of 8 cm. Find its volume and slant height (use Ο = 3.14).
120Β Β 124Β Β 151Β Β 167Β Β Β 292Β Β Β ?
Factor the polynomial: xΒ³ - 6xΒ² + 11x - 6.
What is the function of the "IF" function in Excel?
The simplified value of (452 x 452 x 452 β 356 x 356 x 356)/(452 x 356 + 452 x 452 + 356 x 356) is:
A bag contains 8 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
In the figure, ABCD is a cyclic quadrilateral with O as center of the circle If β BOC = 136Β°, find β OBC.
