The price of a apple increase from R2,40 to R3,72. What is the percentage increase in the price of the apple??
If an exam is 2 and a half hours long and its out of a total of 100 marks
A)how many mintutes do you have in whic to complete the paper??
B) at what rate must you work to ensure you finish the exan within the allowed time??
C)using the answer from C how many marks should you have worked after 6mintutes from the start of the exam??
R 3 / R 2 = 72 / 40 = 1.8
1.8 = 180 %
180 % - 100 % = 80 %
A)
a half hours = 30 min
B)
2 exam / 30 min = 1 exam / 15 min
C)
0 becouse exam not finish
2 and half hours =120+30=150 min
2/150 = 1 exam/75 min
To calculate the percentage increase in the price of an apple, we need to determine the difference between the initial price and the final price, and then divide that difference by the initial price. Here's how you can do it:
Step 1: Find the difference between the final price and the initial price:
Final price - Initial price = R3,72 - R2,40 = R1,32
Step 2: Divide the difference by the initial price:
(R1,32 / R2,40) * 100 = 0,55 * 100 = 55%
Therefore, the percentage increase in the price of the apple is 55%.
Now let's move on to the second question regarding the time and marks for an exam:
A) To determine the number of minutes you have to complete the paper, we need to convert the given time of the exam from hours to minutes. Since there are 60 minutes in an hour, multiply the number of hours by 60:
2.5 hours * 60 minutes = 150 minutes
So, you have 150 minutes to complete the paper.
B) To calculate the rate at which you must work to finish the exam within the allowed time, divide the total number of minutes by the total marks:
150 minutes / 100 marks = 1.5 minutes per mark
Therefore, you need to work at a rate of 1.5 minutes per mark to ensure you finish the exam within the allotted time.
C) To determine how many marks you should have completed after 6 minutes from the start of the exam, divide the elapsed time (6 minutes) by the time it takes to complete one mark (1.5 minutes per mark):
6 minutes / 1.5 minutes per mark = 4 marks
So, after 6 minutes from the start of the exam, you should have completed approximately 4 marks.