1.

The sum of two numbers is twice the third number. If the two numbers are 21 and 17, find the third number.

Answer»

Step-by-step explanation:

LET take the 3 no be 2X

A T Q

Sum of the two no = 21 + 17 = 38

38. + 2x = third no

2x = 38

x = 38 /2 = 19



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