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Mathematics 7 Online
OpenStudy (nuccioreggie):

The table shows the battery life of four different mobile phones: Mobile Phone Battery Life Phone Battery Life (hours) A 20 B 25 C 10 D 18 If 8.45% of the battery life of each mobile phone is used in a day by a typical user, which mobile phone would use a total of 1.69 hours of battery life in a day? Phone A Phone B Phone C Phone D

OpenStudy (nuccioreggie):

i think this one is D i jus wanna make sure

OpenStudy (nuccioreggie):

ok one sec

pooja195 (pooja195):

Just multiply 8.45% by the number of battery life and whichever one gives you 1.69 is your answer.

OpenStudy (tkhunny):

1.69 is 8.45% of what?

OpenStudy (nuccioreggie):

ok one sec i did it wrong

OpenStudy (nuccioreggie):

0.142805 i got that

OpenStudy (nuccioreggie):

o wait wait wait sorry its B correct?

OpenStudy (tkhunny):

Why are you guessing and what are you calculating? 1.69 is 8.45% of what? 1.69 / 0.0845 = 20

pooja195 (pooja195):

@nuccioreggie 1.69 is 8.45% of what? 1.69=8.45% times x

OpenStudy (nuccioreggie):

i wasnt guessing i really got that when i calculated it and so is it A because 1.69 / 0.845=20???

pooja195 (pooja195):

Yea thats right :)

pooja195 (pooja195):

@tkhunny i could see why he chose B :)

OpenStudy (nuccioreggie):

ok thank you guys

OpenStudy (nuccioreggie):

(:

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