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littlesharaih
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The sum of the digits of a twodigit number is 12. If the units digit is 3 times the tens digit, find the number.
 2 years ago
 2 years ago
littlesharaih Group Title
The sum of the digits of a twodigit number is 12. If the units digit is 3 times the tens digit, find the number.
 2 years ago
 2 years ago

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hoblos Group TitleBest ResponseYou've already chosen the best response.2
let a be the units digit and b be the tens digit the number = 10b +a to find a and b we must solve the system a+b =12 a= 3b can you solve it ??
 2 years ago

littlesharaih Group TitleBest ResponseYou've already chosen the best response.1
I'm not understanding
 2 years ago

hoblos Group TitleBest ResponseYou've already chosen the best response.2
you dont understand the part that the two digit number = 10b + a ??
 2 years ago

littlesharaih Group TitleBest ResponseYou've already chosen the best response.1
I don't understand how we start at 10b+a and then we go to a+b=12
 2 years ago

hoblos Group TitleBest ResponseYou've already chosen the best response.2
no! these two parts are not related directly.. 10a+b is the general form of any two digits number but a+b =12 is concluded from the given ( The sum of the digits of a twodigit number is 12)
 2 years ago

littlesharaih Group TitleBest ResponseYou've already chosen the best response.1
dw:1344293939890:dw
 2 years ago

littlesharaih Group TitleBest ResponseYou've already chosen the best response.1
is this correct?
 2 years ago

hoblos Group TitleBest ResponseYou've already chosen the best response.2
b=3 is correct but then you must replace (b=3) in the equation a+b=12 to get a and then add 10b +a
 2 years ago

littlesharaih Group TitleBest ResponseYou've already chosen the best response.1
therefore my answer is 39
 2 years ago

hoblos Group TitleBest ResponseYou've already chosen the best response.2
yes it is.. good job :)
 2 years ago

littlesharaih Group TitleBest ResponseYou've already chosen the best response.1
thank you!!!
 2 years ago

hoblos Group TitleBest ResponseYou've already chosen the best response.2
glad to help :)
 2 years ago
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