Question

3 is subtracted from a number and the difference is multiplied by 4 . If 20 is added
to the product and the sum is divided by 2, the result is equal to 10. Find the
number.​

Answer 1

Answer:

3

Step-by-step explanation:

let the required number be x

atq,

{(x-3)4 +20}/2 = 10

(4x-12+20)/2=10

(4x+8)/2=10

4x +8=20

4x =20-8=12

x=12/4=3