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Question
Shyamli bought a battery. She read on it "Life: 120 hours".
If she uses it for 24 hours of the day, how many days will the battery last?
Shyamli bought a battery. She read on it "Life: 120 hours".
If she uses it for 24 hours of the day, how many days will the battery last?
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Solution
The correct option is B 5
The life of the battery = 120 hours
She uses it all day and night, i.e. for 24 hours
So, the number of days the battery will run = 120 ÷24
Let's use repeated subtraction to find the answer.
120 - 24 = 96
96 - 24 = 72
72 - 24 = 48
48 - 24 = 24
24 -24 = 0
Therefore, the battery will last for 5 days.
The life of the battery = 120 hours
She uses it all day and night, i.e. for 24 hours
So, the number of days the battery will run = 120 ÷24
Let's use repeated subtraction to find the answer.
120 - 24 = 96
96 - 24 = 72
72 - 24 = 48
48 - 24 = 24
24 -24 = 0
Therefore, the battery will last for 5 days.
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