Question
A can complete 5/6 of a work in 15 days and B can
complete 2/3 of work in 8 days. In how many days both A and B together can complete the work?Solution
A completes 5/6 units in 15 days A completes 1 unit in 15 x (6/5) = 18 days B completes 2/3 unit of work in 8 days B completes 1 unit of work in 8 x 3/2 = 12 days LCM of 12 and 18 = 36 units A's efficiency = 3 units/day and B's efficiency = 2 units/day A and B will complete the whole work in (total work)/efficiency of (A + B) = 36/(3 + 2) = 7(1/5) days
20 ×33 + 12 × 23 - 40 ÷ 15-1 + ? = 50
12% of 10% of 15% of 5000 + (12 x 15) = ?
(47.5 ÷ 9.5) × (78.5 ÷ 15.7) + 475 = ? + 15% of 150
[(15)³ × (8)²] ÷ (90 × 6) = ?²
- What will come in place of (?) in the given expression.
(18.5 × 2) + (3.5 × 4) = ? - Find the simplified value of the given expression:
10 of 5 ÷ 4 × 2² + √25 – 8 The speed of the stream is 10 km/h. Boat ‘A’ covers 110 km distance against the stream in 11 hours and boat ‘B’ covers 65 km distance against th...
33 × ?2 – 6 × 5 = 3270
1885 ÷ 64.98 + 7.29 + ? = 69.09
What will come in the place of question mark (?) in the given expression?
737 + 149 - ?²- 367 = 14 X 25
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