Math, asked by shalu3090, 1 year ago

the average rainfall for three months is 14 cm. If the rainfall for the first two months is 15 cm and 16 cm. find the rainfall for third month

Answers

Answered by shad121

here is the required answer

Attachments:

shad121: thank u

shad121: please mark as brainleist

shad121: so my rank changes

shad121: please

PreetRk: it is too simple question sir try to another one some difficult series of quant

shad121: only one marking needes

shad121: needed

shad121: thats why

shad121: you can also earn point by marking as brainleist

Answered by abhi569

$\bold{\boxed{Average=\dfrac{Sum\:of\:observations}{Number\:of\:observations}}}$

===============================

Average rainfall for three months = ( sum of rainfall happen in 1st , 2nd and 3rd month) / ( total number of months )

Rainfall for first two months = 15cm and 16cm

Sum of rainfall for first two months = 15 cm + 16 cm

Sum of rainfall for first two months = 31 cm

Given,Average rainfall for three months = 14 cm.

Applying the formula given above :-

⇒ 14 cm = ( 31 cm + rainfall for 3rd month ) / ( 3 )

⇒ 14 cm x 3 = ( 31 cm + rainfall for 3rd month )

⇒ 42 cm = 31 cm + rainfall for 3rd month

⇒ 42 cm - 31 cm = rainfall for 3rd month

⇒ 11 cm = rainfall for 3rd month

Therefore, rainfall for third month is 11 cm.

khushi1513: well answered ✌✌

abhi569: :-)

PreetRk: 11 cm

abhi569: :-)

abhi569: thank you :-)

BIGBANG1234: super sir

abhi569: :-)

Previous Question

Next Question