31. A note book is bought for Rs.20 and sold for Rs. 18. The loss percentage is
(A) 10%
(B) 15%
(C) 20%
(D) 25%
Answer:
(A) 10%
Explanation:
The financial loss is Cost Price (20) – Selling Price (18) = Rs. 2. The formula for loss percentage is . So, .
32. 98 paise as a percentage of a rupee=
(A) 0.98%
(B) 9.08%
(C) 9.8%
(D) 98%
Answer:
(D) 98%
Explanation:
One Indian Rupee is equal to exactly 100 paise. Therefore, 98 paise out of 100 paise translates directly to 98%.
33. The equivalent decimal fraction for 8.0521 is
(A) 8.00521
(B) 8.05201
(C) 8.05210
(D) 8.5210
Answer:
(C) 8.05210
Explanation:
Adding a zero to the extreme right of the decimal part of a number does not change its mathematical value. Therefore, 8.0521 is exactly equivalent to 8.05210.
34. Factors of 93 are……
(A) 1, 2, 23, 93
(B) 1, 3, 13, 93
(C) 1, 3, 31, 93
(D) 1, 3, 7, 93
Answer:
(C) 1, 3, 31, 93
Explanation:
The number 93 is divisible by 1 and itself (93). The sum of its digits (9+3=12) shows it’s divisible by 3. . Since 31 is prime, the only factors are 1, 3, 31, and 93.
35. Out of 25 mangoes, 4 were damaged. What is the percentage of good mangoes?
(A) 16%
(B) 25%
(C) 75%
(D) 84%
Answer:
(D) 84%
Explanation:
If 4 out of 25 mangoes are damaged, then mangoes are good. The percentage of good mangoes is .
