Question

if we multiply a number by 14 instead of 9 the product of increased by 75 then find the numberif we multiply a number by 14 increase of 9 the product of increased by 75 then find the number​

Answer 1

Answer:

15

Step-by-step explanation:

Let the number be 'x'. And the answer we get be 'y'.

x × 9 = y (This is the correct calculation)

By mistaken we multiply with 14 and gets an answer 75 more than original answer.

x × 14 = (y + 75)

Substitute the y value from above eqn.

x × 14 = (x×9) + 75

14x = 9x+75

5x = 75

x = 15

So, the number is 15.

For check.

Correct calculation = 15×9 = 135

Wrong calculation = 15×14 = 210

Difference b/w these two is 75 (210-135)