Question
‘A’ and ‘B’ together can complete a work in 18
days. If ‘A’ increases his efficiency by 20% and ‘B’ decreases his efficiency by 40%, then the time required to complete the work remains unchanged. Find the ratio of efficiencies of ‘A’ and ‘B’, respectively.Solution
Let the efficiency of ‘A’ and ‘B’ be ‘x’ units/day and ‘y’ units/day, respectively. So, total work = {(x + y) × 18} units After change in efficiencies, Also, total work = (1.2x + 0.6y) × 18 So,
1.2x + 0.6y = x + y Or,
0.2x = 0.4y Or,
x : y = 2 : 1 So, ratio of efficiency of ‘A’ and ‘B’ = 2 : 1
The two boys ____each other for the first place.
In the question below, a sentence is given with two words missing. You are given five options containing a pair of words that can fill the blanks makin...
While hiking the mountains of Nepal, a British Hiker irked a tea seller by bargaining for what she thought was steeply priced tea. At 150 Nepalese Rupee...
These _______ expectations were not fully realized.
The recent financial report indicates that while the profits have _____ significantly, the expenses have _____ at an alarming rate.
Decision-makers occupying the high echelons in the judiciary and the executive should ______________ that by not making the fullest use of the expertis...
The sound track gives us the ____________ before the visual cue; it is as if the thunder arrives before the lightning.
Once transportation across long distances made other vegetables easily available, we ______ what was available in our backyards.
When his company’s stock price dropped under a dollar, the CEO decided to ___________ his title and leave the firm.
Choose the most appropriate word to fill in the blank.
The student was __________ after receiving praise for his outstanding performance in the...
Relevant for Exams:
