If the sum of 40% of a number and 30% of the same number is 70, then the number is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 100
Let the number be 100x
40% of the number = 40x
30% of the number = 30x
40x + 30x = 70
x = 1
Original number = 100