Identify the correct mathematical statement(s) :

1.If the cost price of 10 articles is equal to selling price of 9 articles, then profit is 10%.

2.4 2/3 + 3 1/2 - 1 2/3 = 13/2

3.If x/y = 2/75, then (y - x)/(y + x) = 77/73

4.1/0.04 is equal to 25

A2 & 4 only ✓ Correct

B1 & 2 only

C2, 3 & 4 only

D4 only

Correct answer: (A) 2 & 4 only

Explanation

Statements 2 and 4 are correct.

Statement 2 : 14/3 + 7/2 - 5/3 = (14 - 5)/3 + 7/2 = 3 + 7/2 = 13/2, true.

Statement 4 : 1/0.04 = 100/4 = 25, true.

Statement 1 fails : CP of 10 = SP of 9 gives profit = 1/9 = 11.11%, not 10%.

Statement 3 fails : with x = 2, y = 75, (y - x)/(y + x) = 73/77, not 77/73.

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