Question

the product of the digits of a two digit number is 24.If the units's digit exceeds twice its ten's digit by 2: find the number

Answer 1

@ganeshie8

Answer 2

@mathstudent55

Answer 3

help?

Answer 4

say the number = ab

Answer 5

\[a\times b = 24\tag{1}\]
\[b = 2a+2\tag{2}\]

solve

Answer 6

???

Answer 7

its a quadratic equation problem

Answer 8

@hartnn

Answer 9

did u get how ganeshie8 got those 2 equation?

Answer 10

its quadratic....

Answer 11

they are system of equations

Answer 12

you can get a simple quadratic by combining them

Answer 13

if you plug in 'b' in the first equation,you will get a quadratic in a

Answer 14

im doing this topic after 1 yr soo

im confused

Answer 15

2 digit number : ab

the product of the digits of a two digit number = \(a\times b\)
is 24 : \(a\times b =24\)
good so far ?

Answer 16

yes

Answer 17

if the units's digit exceeds twice its ten's digit by 2

b= 2a+2

this?

Answer 18

units digit is b
tens digit is a

Answer 19

yes so now what??

Answer 20

plug in b =2a+2
in
ab =24

Answer 21

????