Average of four consecutive odd numbers is 40 . largest number?

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The average of four consecutive odd numbers is $40 .$ What is the largest number?

A

$42$

B

$45$

C

$43$

D

$44$

Solution

Average of Middle $2$ terms $=40$

$\frac{x+x+2}{2}=40$

$2 x+2=80$

$2 x=78$

$x=39$

Second term is $39$

largest term is $39+4=43$

Standard 13

Quantitative Aptitude

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