A laboratory experiment runs for 2 hours 45 minutes each day. If it continues for 12 days, find the total time spent in hours.
33
The daily duration of 2 hours 45 minutes equals \(2 \times 60 + 45 = 165\) minutes.
Over 12 days, the total time is \(165 \times 12 = 1980\) minutes.
Converting to hours, \(\frac{1980}{60} = 33\) hours.
Hence, the total time spent is 33 hours.
Important Questions from Quick Math
A is 120% of B and B is 65% of C. If the sum of A, B and C is 121.5, then the value of C - 2B + A is:
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- Some students (only boys and girls) from different schools appeared for an Olympiad exam. 20% of the boys and 15% of the girls failed the exam. The number of boys who passed the exam was 70 more than that of the girls who passed the exam. A total of 90 students failed. Find the number of students that appeared for the exam.
The price of an item is reduced by 20%. As a result, customers can get 2 kg more of it for ₹360. Find the original price (in ₹) per kg of the item.
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