Answer:
1% of 4000 + 4% of B = 2% of (4000 + B)
40 + 0.04*B = 0.02( 4000 + B)
40 + 0.04* B = 80 + 0.02*B
40 + 0.04*B - 80 - 0.02B = 0
0.02*B - 40 = 0
0.02*B = 40
2B = 4000
B = 2000
Step-by-step explanation:
The total change in the water in the pool after 2 1/2 hours given the rate of leakage is -3 1/8,
<h3>What are fractions?</h3>
A fraction is a non-integer. It is made up of numerators and denominators. A mixed fraction is made up of a whole number and a proper fraction. An example is 2 1/2.
<h3>What is the total change in the water?</h3>
The total change in the water = -1 1/4 x 2 1/2
= -5/4 x 5/2 = -25/8 = -3 1/8
To learn more about multiplication of fractions, please check: brainly.com/question/1114498
317 is the answer you are looking for.
Answer:
1 DVD costs 15 cents.
I million DVDs cost 150,000 dollars.
Step-by-step explanation:
If 20 DVDs ------ $3
then, 1 DVD----------- x
20x = 3
x = 3/20
x = 0.15
1 DVD costs 15 cents
i already did this problem in one of my quizzes
