a storage battery discharges at a rate which is directly proportional to its charge is reduced by 50% of its original value at the end of 2 days, how long will it take to reduce the charge to 25% of its original charge?

Question

anonymous · Answer

who can help?

anonymous · Answer

This statement does not make sense.
a storage battery discharges at a rate which is directly proportional to its charge is reduced by 50% of its original value at the end of 2 days

anonymous · Answer

If a storage battery discharges at a rate directly proportional to it's charge.  It would mean that when the battery is at 100% it discharges at a different rate then when the battery is at 50%.

So if the question is...

If a storage battery discharges at a rate directly proportional to it's charge and at the end of 2 days the battery is at 50% then how long will it take to get to 25%?

anonymous · Answer

What grade are you in?

anonymous · Answer

4-0.04x = d

Gives you...

Battery %	Days	Minutes
100	0	0
90	0.4	576
80	0.8	1152
70	1.2	1728
60	1.6	2304
50	2	2880
40	2.4	3456
30	2.8	4032
20	3.2	4608
10	3.6	5184
0	4	5760

However the complexity of this question compared to the other questions is so far off and the question is not accurately written that this may be the interpretation they are seeking.  Otherwise it would mean that the rate of discharge increases as the battery discharges which would be a completely different question.

anonymous · Answer

is it 4 days

anonymous · Answer

You can plug the value you want into the formula.