A typing institute conducted a survey among its students. They observed the types of keys that were pressed during every minute of typing. Their findings are as shown.

Q1. If Amit has a typing speed of 100 keys per minute, then how many E’s does the type in 1 minute?
a. 10
b. 12
c. 14
d. 16

Q2. For a speed of 100 keys per minute, how many A’s and T’s are punched in a minute?
a. 18
b. 21
c. 24
d. 27

Q3. Which key is pressed the maximum number of times in a minute?
a. A
b. E
c. Shift
d. All of these

Q4. Assuming that Amit’s typing speed is 150 letters per minute then, how many non-letter keys does he type in a minute?
a. 40
b. 50
c. 60
d. None of these