SOLUTION: what 2 digit number is equal to three times the product of its digits
Algebra.Com
Question 212344: what 2 digit number is equal to three times the product of its digits
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
x = the 10's digit; y = units; 10x + y = the number
:
what 2 digit number is equal to three times the product of its digits
10x + y = 3(xy)
:
10x = 3xy - y
:
10x = y(3x - 1)
:
y =
;
Substitute for x and find an integer value for y
:
Only 2 solutions
x = 1, y = 5; 15 is the number
and
x = 2, y = 4; 24 is the number
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