Question

10. A number multiplied by 3÷2
and then decreased by 3÷4 gives 5÷4 . The number is ______________ .​

Answer 1

Step-by-step explanation:

Let’s assume the unknown number to be ‘x’.

Multiplying 3 by x would give 3x, and dividing 3x by 2 would give 3x/2.

Now, as the given result is 18, we can say that

3x/2=18

multiplying both sides by 2 would give,

(3x/2)*2=18*2

3x=36

and now dividing both sides by 3 will give

3x/3=36/3

x=12 Hence the unknown number ‘x’ would be equal to 12.