Question
‘D’ and ‘E’ together finish a task in 20 days.
If ‘D’ is 70% more efficient than ‘E’, how many days will ‘E’ take to complete the task alone?Solution
Let the efficiency of ‘E’ be 10x units. Efficiency of ‘D’ = 10x × 1.7 = 17x units Total work = 20 × (10x + 17x) = 540x units Time taken by ‘E’ alone = 540x ÷ 10x = 54 days
What will come in the place of question mark (?) in the given expression?
59.92 × 15.11 + √4224 = ? + 144.9
(8.6 × 8.6 + 4.8 × 4.8 + 17.2 × 4.8) ÷ (8.62 – 4.82 ) = ? ÷ 19
- What will come in the place of question mark (?) in the given expression?
166/? = √576 - 3.25
(122 - 82 ) of 52 + 52 = ?2
Find the value of 16 X [(8 - 5) of 12 ÷ 4].
(? + 180 + 13 × 6) ÷ 20 + 3.5 × 512 (1/3) = 82
The alarms of two alarm clocks sound at regular intervals of 72 seconds and 80 seconds. If they beep together for the first time at 6:00 am, at what tim...
What will come in the place of question mark (?) in the given expression?
133 ÷ 19 X √576 + ? ÷ 2 = 32 X 7.5(2/?) x (3/16) x (2/15) x 60 = 1/3
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