5 members of a team are weighed consecutively and their average weight calculated after each member&

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$5$ members of a team are weighed consecutively and their average weight calculated after each member is weighed. If the average weight increases by one kg each time, how much heavier is the last player than the first one? (in $kg$)

A

$4$

B

$20$

C

$8$

D

$5$

Solution

Weight of first member $=x Kg$

Weight of second member $=(x+2) Kg$

Weight of third member $=(x+4) Kg$

Weight of fourth member $=(x+6) Kg$

Weight of fifth member $=(x+8) Kg$

$\therefore$ Difference $=x+8-x=8 Kg$

Standard 13

Quantitative Aptitude

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