-5
$\begingroup$

The average rainfall over a given place during the three years period of $2017 - 2019$ was $65$ cm. During the three year period $2016 -2018$ the average rainfall was $63$ cm .The actual rainfall during $2019$ was $60$cm .what was the rainfall in $2016 $?

choose the correct option

$a)$ $55$cm

$b)$ $60$ cm

$c) $$54$ cm

$d)$ $53$ cm

Im confused

$\endgroup$
1
$\begingroup$

Hints:

(1) You can figure out the two three-year totals.

(2) Any difference would have to be due to 2016 vs. 2019, since the other years are common to both three-year periods.

(3) As an aside...How do we know the 2019 total??

$\endgroup$
  • $\begingroup$ what is the answer ? $\endgroup$ – Messi fifa Jun 15 at 14:34
  • 2
    $\begingroup$ If someone just tells you the answer, you really don't learn anything. Try to work it our from the hints I gave. $\endgroup$ – paw88789 Jun 15 at 14:41
  • $\begingroup$ ,,,@paw88789 im not getting ur hints....pliz write complete answer $\endgroup$ – Messi fifa Jun 15 at 14:49

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.