The average rainfall of a city from Monday to Saturday is 0.3cm. due to heavy rainfall on Sunday,the average for the whole week rose to 0.5cm. how much rainfall on Sunday? (Ans. Sunday rainfall 1.7cm)
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Answered by
45
Answer:
Explanation:
Average rainfall from Monday to Saturday = 0.3 cm
Total rainfall in 6 days = 6*0.3 = 1.8 cm
Average rainfall of whole week = 0.5 cm
Total rainfall in 7 days = 7*0.5 = 3.5 cm
Rainfall on Sunday = 3.5 - 1.8 = 1.7 cm
Answered by
4
Given:
Average rainfall of the city from Monday to Saturday = 0.3 cm
Final average due to increase in rainfall on Sunday = 0.5 cm
To find:
The amount of rainfall on Sunday.
Solution:
The total amount of rainfall from Monday to Saturday will be:
= 0.3 × 6
= 1.8 cm
Let the amount of rainfall on Sunday be equal to x cm. Then since the average of the week became 0.5 cm,
(1.8+x) / 7 = 0.5
1.8 + x = 3.5
x = 3.5 - 1.8
x = 1.7 cm
Thus, the amount of rainfall on Sunday was 1.7 cm.
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