Assistant Director IB Quiz-9

1. A printer numbers the pages of a book starting with 1 and uses 3 189 digits in all. How many pages does the book have?

2. A man completes a journey in 10 hours. He travels the first half at 21 km/h and the second half at 24 km/h. Find the total distance.

3. A is 3 years older than B and 3 years younger than C, while B and D are twins. How many years older is C than D?

4. A farmer travelled 61 km in 9 hours, partly on foot at 4 km/h and partly by bicycle at 9 km/h. How many kilometres did he walk?

5. The total of the ages of Amar, Akbar and Anthony is 80 years. What was the total of their ages three years ago?

6. A tailor cuts shirt pieces from rolls of fabric, each roll yielding 10 pieces. At 45 cuts per minute, how many rolls can he cut in 24 minutes?

7. If a 1 mm thick paper is folded so that the area is halved at every fold, what is the thickness after 50 folds?

8. A total of 324 coins of 20 paise and 25 paise make a sum of Rs. 71. The number of 25 paise coins is:

9. If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days?

10. A car travelling at 5/7 of its actual speed covers 42 km in 1 hr 40 min 48 sec. What is its actual speed?