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‚Äčthe number of photos she is a 2 digit number. the sum of the digits is 11. the tens digit is 3 more

Mathematics
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the number of photos she is a 2 digit number. the sum of the digits is 11. the tens digit is 3 more than ones digit. how many photos did trini take?

Apr 8th, 2015

Let the number be 10x + y, where x is the tens digit and y is the ones digit.

We know that x + y = 11 and x = y + 3. Then (y + 3) + y = 11; 2y + 3 = 11; 2y = 8, and y =4. Finally, x = 7.

She took  74 photos.

Apr 8th, 2015

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