Q4. In a coconut grove, (x + 2) trees yield 60 nuts per year, x trees yield 120 nuts per year, and (x – 2) trees yield 180 nuts per year. If the average yield per year per tree be 100, find the value of x.
Q5. Visitors to a show were charged Rs. 15.00 each on the first day, Rs. 7.50 on the second, Rs. 2.50 on the third day. Visitors total attendance for three days were in the ratio 2: 5: 13. Find out the average charge per visitor for the entire show.
(a) Rs. 7
(b) Rs. 5
(c) Rs. 9
(d) Rs. 11
Q6. A man whose bowling average is 12.4, takes 5 wickets for 26 runs and, thereby decreases his average by 0.4. The number of wickets, taken by him, before his last match is:
Q7. If the digit in the units place of a two-digit number is halved and the digit in the tens place is doubled, the number thus obtained is equal to the number obtained by interchanging the digits. Which of the following is definitely true?
(a) Digits in the units place and the tens place are equal.
(b) Sum of the digits is a two-digit number.
(c) Digit is the units place is half of the digit in the tens place.
(d) Digit in the units place is twice the digit in the tens place.
Q8. If the two digits of the age of Mr. Manoj are reversed then, the new age so obtained is the age of his wife. 1/11 of the sum of their ages is equal to the difference between their ages. If Mr. Manoj is elder than his wife then find the difference between their ages?
(a) Cannot be determined
(b) 10 years
(c) 8 years
(d) 9 years
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