Question
In an office, an employee plans to do a work in 15 days
with 6 laptops. But after 8 days, he found that only 50% of the work is done with the laptops working for 7 hours a day. If he want to complete the work in the planned time with the laptops, how many hours per day the laptops have to work?Solution
Laptops do 50% of the work in 8 days, or 8 × 7 = 56 hours. So the rest of the (i.e., 50% of the work) can be done in, => (50 × 56)/50 = 56 hours This 56 hours of work has to be done in the remaining (15 – 8) = 7 days. Laptops have to work (56/7) = 8 hours a day to complete the work in the planned time.
1200 - 60 X 6 + 30 = 30 X 20 + ?
36×?² + (25% of 208 +13) = 60% of 2400 + 17×18
1123 + 1452 + 1015 - 2640 = ?
125 + 30% of 250 + √576 = ?
Simplify the following expression.
(3-3 × 3 + 3 ÷ 3 + 3 × 5) × 2 of 5 + (2 + 2 ÷ 2 + 2 × 2 - 2)
36% of 250 – 18% of 200 = 30% of ?
345 × 20 ÷ 4 + 28 + 60 = ?Â
12% of 450 + 16% of 1500 = ?
961 × 4 ÷ 31 – 15% of 180 = ? – 73
√? = 80% of 720 - 22% of 2500