Purchase Solution

Ratios, Proportions and Percentages Applications Word Problems

Not what you're looking for?

Ask Custom Question

A- electronics problems.

1- If a monitor is to be sold at 30% off, how much do you have to pay?

2- A $750 digital camera is on sale for $695, what is the percent savings? When dividing, round to the nearest thousandth.

3- In science class, nicole built a cardboard girder( or a I-beam) in science class that can support 21.5% of mr. sit's weight. if a ginder can support 30.24 pounds, how much does mr. sit weight ? solve wiht the percent formula.

4- Kyle got a 64% on his latin exam. if the exam has 75 points in total, how many points in total did he receive on his exam? solve with the percent formula.

5- Show the proportions that you could have used to solve for exercise #3 and #4

6- Let's say it takes 3000 cows to make enough footballs for one season of the NFL. If the NFL decides to make the official football a bit larger so that it now takes 3400 cows, what is the percent change in the cows needed?

Purchase this Solution

Solution Summary

Ratios, Proportions and Percentages Applications Word Problems are solved. The solution is detailed and well presented.

Solution Preview

1- if a monitor is to be sold at 30% off, how much do you hve to pay?

You only need to pay 1-30%=70%. For instance, It was worth 100 dollars, you just pay for 70 dollars.

2- a $ 750 digital camera is on sale for $695, what is the percent savings? when dividing, round to the nearest thousandth.

You save (750-695)/750*100%=7.333%

3- in science class, nicole built a ...

Solution provided by:
Education
  • BSc , Wuhan Univ. China
  • MA, Shandong Univ.
Recent Feedback
  • "Your solution, looks excellent. I recognize things from previous chapters. I have seen the standard deviation formula you used to get 5.154. I do understand the Central Limit Theorem needs the sample size (n) to be greater than 30, we have 100. I do understand the sample mean(s) of the population will follow a normal distribution, and that CLT states the sample mean of population is the population (mean), we have 143.74. But when and WHY do we use the standard deviation formula where you got 5.154. WHEN & Why use standard deviation of the sample mean. I don't understand, why don't we simply use the "100" I understand that standard deviation is the square root of variance. I do understand that the variance is the square of the differences of each sample data value minus the mean. But somehow, why not use 100, why use standard deviation of sample mean? Please help explain."
  • "excellent work"
  • "Thank you so much for all of your help!!! I will be posting another assignment. Please let me know (once posted), if the credits I'm offering is enough or you ! Thanks again!"
  • "Thank you"
  • "Thank you very much for your valuable time and assistance!"
Purchase this Solution


Free BrainMass Quizzes
Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Probability Quiz

Some questions on probability

Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.