Marcus solved a problem and found out that 190% of 20 is 380. Is he correct

Mathematics

2 answers:

avanturin [10]3 years ago

8 0

Answer: He is Incorrect, It's 38

Work: For this question, I did the Cross-Product Method. The Cross Product Method is when you solve equation via to fractions. With the CPM, One one side of the fraction, I had x / 20 (Twenty being the whole number) and on the other side, I had 190/100 (190 being the percent) After setting this up, I made the equation. 190 times 20 is 3800, and the other multiplication is 100 times x which is 100x. So, the new equation is 3800 = 100x. I divided both sides by 100, and the answer is 38 = x

<em>I hope this helps, and Happy Holidays! :)</em>

Fofino [41]3 years ago

7 0

Answer:

No, Marcus is not correct. He converted the percent to a decimal correctly and he multiplied correctly, but he put the decimal in the wrong place in the answer. There should be two decimal places in the answer, so the answer should be 38.

Step-by-step explanation:

I took the assingment in edge 2020

You might be interested in

At a college, the cost of tuition increased by 10%. Let b represent the former cost of tuition. Use the expression b+0.10b for

kirza4 [7]

Question is Incomplete,Complete question is given below;

At a college, the cost of tuition increased by 10%. Let b be the former cost of tuition. Use the expression b + 0.10b for the new cost of tuition.

a) Write an equivalent expression by combining like terms.

b) What does your equivalent expression tell you about how to find the new cost of tuition?

Answer:

a. The equivalent expression is $1.1b$ .