E + 10 = P
(P + 5) = 2(E +5)
E = P -10
P + 5 = 2((P-10)+5)
P + 5 = 2P -20 + 10
P + 5 =2P - 10
-P = -15
P = 15
Step-by-step explanation:

Answer:
An exact number is one that has no uncertainty. An example is the number of tires on a car (exactly 4) or the number of days in a week (exactly 7). An approximate number is one that does have uncertainty. ... The number can be the result of a measurement.
Step-by-step explanation:
54% = 54/100 = 27/50
Answer: 27/50
Hope it helped :)