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Algebra Level 1

The sum of the letters in the first row is 10, and the sum of the letters in the second column is 15.

What is the sum of the letters in the third column?

20 10 5 15

Chung Kevin by Chung Kevin , 46, Australia

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1 solution

Ryan Shi
Oct 23, 2016

E + T + T = 15 E + T + T = 15

E + T + A = 10 E + T + A = 10

hence, T − 5 = A T - 5 = A

A + E + A = T + T + E − 10 A + E + A = T + T + E - 10

Substituting from first equation 15 − 10 = 5 15 - 10 = \boxed{5}

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Since we only have 2 equations and 3 unknowns, we cannot nail down the exact values of T, E, A.

I was trying to hide the equations in the word square :)

Chung Kevin - 4 years, 7 months ago

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