Question

in a two digit number , the digit at tens place is 1 more than the digit at i nit place . if the product of the digit is 20 , find the number.

Please solve it step by step please help me ❣️
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Answer 1

Answer:

54

Step-by-step explanation:

find all factors of 20:

2,4,5,10

Answer 2

21

Step-by-step explanation:

let numbers be xy

10x + y

according to logic

10(y+1) + y

now product is 20

10y+10 × y= 20

10y²+ 10y -20=0

take 10 common

y²+y-2=0

y²+2y-y-2=0

(y+2)(y-1)=0

y =- 2 and y = 1

let y = 1

then x = 1+1 =2

so number is 21