Question

ATIVITY
Try this trick!
ENRICHMENT ACTIVITY
Think of any 2-digit number. Subtract
by 1. Multiply the difference by 3.Add 12 to the product.Divide the sum by 3. Add 5 to the quotient and find
the sum. What is the difference between the sum and the number you started with?​

Answer 1

Answer:

suppose that to digit number is 10

according to question

10-1=9

9×3=27

27+12=39

39÷3=13

13+5=18

18-10 = 8

the difference is 8

Answer 2

Answer:

let the no. on once place be x and on tens place will be 10x

so (10x.x)-1

3(10x.x-3)

than add so (3(10x.x-3))+12