Question

Pedro bought 9 kg of sugar at the price of R$1.80 per kilogram, six packets of coffee at the price of R$3.90 per packet and 8 kg of rice at the price of R$2.70 per kilogram. Knowing that he paid for the purchases with a R$100.00 bill, how much change did he receive?

222

likes
1110 views

Answer to a math question Pedro bought 9 kg of sugar at the price of R$1.80 per kilogram, six packets of coffee at the price of R$3.90 per packet and 8 kg of rice at the price of R$2.70 per kilogram. Knowing that he paid for the purchases with a R$100.00 bill, how much change did he receive?

Expert avatar
Maude
4.7
108 Answers
To calculate Pedro's total expenses and change, you need to add up the costs of sugar, coffee, and rice, and then subtract that total from the R$100.00 bill. Here's how you can do it step by step: Calculate the cost of sugar: Cost of sugar = 9 kg * R$1.80/kg = R$16.20 Calculate the cost of coffee: Cost of coffee = 6 packets * R$3.90/packet = R$23.40 Calculate the cost of rice: Cost of rice = 8 kg * R$2.70/kg = R$21.60 Add up the costs of sugar, coffee, and rice: Total cost = R$16.20 + R$23.40 + R$21.60 = R$61.20 Now, subtract the total cost from the R$100.00 bill to find the change: Change = R$100.00 - R$61.20 = R$38.80 Pedro received R$38.80 in change after paying for his purchases with a R$100.00 bill.

Frequently asked questions (FAQs)
What is the length of the hypotenuse of a right triangle when the lengths of the other two sides are 4 and 7?
+
What is the length of the median of a triangle if the lengths of the other two medians are 5cm and 8cm?
+
What is the simplified equation of an ellipse with a center at (-2,3), a major radius of 5, and a minor radius of 3?
+
New questions in Mathematics
calculate the derivative by the limit definition: f(x) = 6x^3 + 2
-x+3x-2,si x=3
10! - 8! =
A college believes that 22% of applicants to that school have parents who have remarried. How large a sample is needed to estimate the true proportion of students who have parents who have remarried to within 5 percentage points?
Use the elimination to find the solution to each linear system. X+y=43 2x-y=20
A, B, C and D are numbers; If ABCD = 23, What is the result of ABCD BCDA CDAB DABC operation?
How many different ways can a psychology student select 5 subjects from a pool of 20 subjects and assign each one to a different experiment?
(-5/6)-(-5/4)
solve for x 50x+ 120 (176-x)= 17340
6-35 A recent study by an environmental watchdog determined that the amount of contaminants in Minnesota lakes (in parts per million) it has a normal distribution with a mean of 64 ppm and variance of 17.6. Assume that 35 lakes are randomly selected and sampled. Find the probability that the sample average of the amount of contaminants is a) Greater than 72 ppm. b) Between 64 and 72 ppm. c) Exactly 64 ppm. d) Greater than 94 ppm.
Let A, B, C and D be sets such that | A| = |C| and |B| = |D|. Prove that |A Γ— B| = |C Γ— D|
Convert 9/13 to a percent
Let v be the set of all ordered pairs of real numbers and consider the scalar addition and multiplication operations defined by: u+v=(x,y)+(s,t)=(x+s+1,y+t -two) au=a.(x,y)=(ax+a-1,ay-2a+2) It is known that this set with the operations defined above is a vector space. A) calculate u+v is au for u=(-2,3),v=(1,-2) and a=2 B) show that (0,0) #0 Suggestion find a vector W such that u+w=u C) who is the vector -u D) show that axiom A4 holds:-u+u=0
(2m+3)(4m+3)=0
In a company dedicated to packaging beer in 750 mL containers, a normal distribution is handled in its packaging process, which registers an average of 745 mL and a standard deviation of 8 mL. Determine: a) The probability that a randomly selected container exceeds 765 mL of beer b) The probability that the beer content of a randomly selected container is between 735 and 755 mL.
List five numbers that belong to the 5 (mod 6) numbers. Alternate phrasing, list five numbers that satisfy equation x = 5 (mod 6)
00 piece jigsaw puzzle. the completed puzzle is 10x10. each piech connects to at least 2 other pieces. i plan to assemble by taking pieces out of box one by one. if i've already taken out 2 pieces that dont directly connect, what is the minimum number of additional pieces that i need to draw to in order to guarentee that the original 2 pieces connect?
7- A printing company found in its investigations that there were an average of 6 errors in 150-page prints. Based on this information, what is the probability of there being 48 errors in a 1200-page job?
2+2020202
Triangle ABC has AB=AC and angle BAC =X, with X being less than 60 degrees. Point D lies on AB such that CB = CD Point E lies on AC such that CE= DE Determine angle DEC in terms of X