Which of the following statements are true?

1.If an athlete runs 200 metres in 24 seconds, then his speed is 30 Km/hr.

2.Sixty five percent of a number is 21 less than 4/5 of that number. The number is 150.

3.A car is running at a speed of 108 Km/hr. The distance covered by car in 15 seconds is 450 metres.

4.Difference between 2 numbers A and B is 1660. If 7.5% of A is 12.5% of B, the value of A & B is 4150 and 2200.

A1, 2 & 3 only

B2, 3 & 4 only

C1 & 3 only ✓ Correct

D2 & 4 only

Correct answer: (C) 1 & 3 only

Explanation

Statements 1 and 3 are correct.

Statement 1: 200/24 = 8.33 m/sec = 8.33 x 18/5 = 30 km/hr.

Statement 2: 0.15n = 21 gives n = 140, not 150.

Statement 3: 108 x 5/18 = 30 m/sec, so 30 x 15 = 450 m.

Statement 4: A:B = 5:3 with difference 1660 gives B = 2490, not 2200.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.