Explanation

Doubling time is 4 hours.

From 12:00 PM to 3:00 PM is only 3 hours.

So bacteria have not doubled yet.

If counting full doubling only, number remains 30 at 3:00 PM. It will become 60 at 4:00 PM.

If using exact growth formula:

N = 30 x 2^(3/4) = 50.45 = approx 50 bacteria.

Last verified on 04-11-2026

Explanation

Total work = 6 clerks _ 15 hours = 90 clerk-hours

Work done in first 5 hours = 6 _ 5 = 30 clerk-hours

Remaining work = 90 - 30 = 60 clerk-hours

Now total clerks = 6 + 3 = 9 clerks

Time to finish remaining work = 60 / 9 = 6.66 hours = 6 hours 40 minutes

Total time required = 5 hours + 6 hours 40 minutes = 11 hours 40 minutes

Last verified on 24-10-2026

Explanation

2.5 hours = 2.5 x 60 = 150 minutes

Fee = Rs. 6 for 150 minutes

Fee per minute = 6 / 150 = Rs. 0.04

= 4 Paisa per minute.

Last verified on 22-10-2026

Explanation

Next bus = 10:45 AM

Bus every 30 minutes, so last bus left at:

10:45 - 30 minutes = 10:15 AM

That bus left 10 minutes ago, so current time:

10:15 + 10 minutes = 10:25 AM

Last verified on 20-10-2026

Explanation

1 inch = 20 miles

Distance on map = 6 1/5 inches = 6.2 inches

Actual distance = 6.2 x 20 = 124 miles

Last verified on 20-10-2026