Question

It rained as much as on Wednesday as on all the other days of the week combined. If the average rainfall for the whole week was $3$ $cm$, how much did it rain on Wednesday?

• A. $2.625$ $cm$
• B. $3$ $cm$
• C. $10.5$ $cm$
• D. $15$ $cm$

Answer 1

The correct option is C $10.5$ $cm$

Let the rainfall on Wednesday be $x$ cm
So, the rain fall on the other $6$ days will also be $x$ cm
Then $x+x=3\times 7$
$2x=21$
$x=10.5cm.$