Question
‘R’ completes a job in 10 days. ‘S’ is twice as
efficient as ‘R’. How much time will they take to complete 120% of the work together?Solution
Let total work = 100x units.
Efficiency of R = 100x / 10 = 10x units/day.
S is twice as efficient, so S's efficiency = 2 × 10x = 20x units/day.
120% of work = 100x × 1.20 = 120x units.
Combined efficiency = 10x + 20x = 30x units/day.
Time taken = 120x / 30x = 4 days.
263 + 1152 - ? + 577 = 1333
√? = 32% of 900 + 48% of 50
What will come in the place of question mark (?) in the given expression?
?2 = 3945 ÷ 5 + 774 ÷ 6 – 77
If 1.123 × 3.211 = 3.122 + ______________, then the number in blank space is
Simplify the following expression:-
?2 = (1035 ÷ 23) × (1080 ÷ 24)
What will come in place of the question mark (?) in the following expression?
Simplify: 0.004 × 0.5
What will come in the place of question mark (?) in the given expression?
(? ÷ 16) = (20 ÷ ?) X 20Find the value of 45 - 3 x (4 of 6 + 12 ÷ 3 × 6 – 4 × 5) + 6.
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