If he had to lower it by 25%, it currently weight 75% of its original weight so if we let w=original weight:
w(75/100)=30 multiply both sides by 100
75w=3000 divide both sides by 75
w=40
So the original weight of the luggage was 40 kilograms.
Answer: 7
Step-by-step explanation:
Answer:
To help in solving exponential equations when relating the bases cannot be used
Step-by-step explanation:
Recall an equation of the form
from the expression , is the base and the power is .
it is impossible to carryout the operation since the bases are not equal.
This is where we implore the help of logarithm which help us to bring the base to a come base i.e using the property below
.
Hence we can conclude that logarithm helps in solving equations when bases cannot easily be related.
Answer:
25%
Step-by-step explanation:
divide 3000 by 750 And you get 4. in percentages that would be 1/4 or 25%