The employee bought it for 172.50, that's with a 25% discount, so 100% - 25% = 75%, so, the employee is only paying 75% of the current price, which is 172.50, let's say "x" is the regular price.
so, if "x" is the 100%, and we know that 172.50 is the 75%, what the dickens is "x"?
now, we know the 230 is the price, but already increased by 15%, so hmm if say the item before the increase is say "p", which is 100%, and we know that 230 is 100% + 15% = 115%, then what is "p"?
33 is the number. So 33 subtract 10 equals 23.
From the first two inference, it takes her phone 1 minute to charge 2% i.e 1 minute of charge = 2% of battery.
Therefore; charging from scratch,
1 min = 2%
x mins = 50%.
using cross multiplication,
x mins = (50% × 1 min) ÷ 2%.
x = 25 mins.
For 90%, applying the same formula,
y min = (90% × 1 min) ÷ 2%
y = 45 mins.
So from zero percent, it will take Dana's phone 25 minutes to charge to 50% and 45 minutes to charge to 90%.
Answer:
6
Step by step explanation:
2 + 2 * x = 10
2x+2=10
2x+2−2=10−2
Therefore, x = 6
Answer:
13
Step-by-step explanation:
Take 18 minus 5 and the answer is 13.