(A) 8
(B) 16
(C) 20
(D) 40
Answer: (A) 8
Explanation:
50% of 80 = 80 x 50/100 = 40
20% of 40 = 40 x 20/100 = 8
so, answer is 8.
Category: Mathematics MCQs
Mathematics Multiple Choice Questions (MCQs) Test with Answers.
The product of 414 with itself is:
(A) 18.69
(B) 195938
(C) 171396
(D) 24.89
Answer: (C) 171396
Explanation:
414 x 414 = 171396
The sum of the interior angles of a kite is equal to:
(A) 900
(B) 1800
(C) 2400
(D) 3600
Answer: (D) 3600
If a and b are two non-zero numbers and if 69(a+b) = (69+a)b, than which of the following must be true?
(A) a=69
(B) a+b=ab
(C) b=69
(D) a<1
Answer: (C) b= 69
Explanation:
69(a+b) = 69a+69b (by descriptive law)
(69+a)b = 69b+ ab
then,
69a+69b = 69b + ab
69a = ab
b = 69 (dividing both side by a)
If 75 percent of a number is “y”. And, 80 percent of “y” is 60, then what is the number?
(A) 100
(B) 110
(C) 120
(D) 130
Answer: (A) 100
Solution:
