Between two mixed

What is the rational number between 2 1/4 and 2 4/5?

Correct answer:

x =  2.525

Step-by-step explanation:

a=214=2+14=2 4+14=94=2.25 b=245=2+45=2 5+45=145=2.8  x=(a+b)/2=(2.25+2.8)/2=10140=22140=2.525

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