Question

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, for which mobile phone is 2.1 hours of battery life used in a day?
Phone A
Phone B
Phone C
Phone D

Answer 1

ill give medals

Answer 2

Let 'x' be the total battery life.
If 8.45% of the battery which was spent is equivalent to 2.1hours, then,
8.45% x = 2.1 hours
------------------------
Expressing 8.45% in decimal you'll have:
0.0845x = 2.1
Divide the whole equation with 0.0845
x = 24.85 hours
approximately 25 hours
So the battery life you're looking for is of phone B

Answer 3

thank you @shinalcantara

Answer 4

np =)

Answer 5

 =)