A chemist has one solution that is 30% pure salt and another is 60% pure salt. How many ounces of each solution must ne use to produce 60 ounces of a solution that is 50% pure salt?
Dear Tutor, I am having so much problem with percentages and fractions so can you please help me with these problems? Can you please help me solve this problem: What is 35% of a number if 12 is 15% of a number? Can you please help me with this one as well? If 45% is 120% of a number, what is 80% of the same number? Thank You, Donna
James is a salesperson for an electronics company. He may choose to receive $500 or 5% commission on his sales as payment for his work. How much does he need to sell to make the 5% offer a better deal?
Jackie makes a batch of cookies using a 5 : 2 ratio of chocolate chips to candies. If each cookie has an average of six candies, how many chocolate chips must Jackie add to the dough to make a dozen cookies? a) 72 b) 180 c) 360 d) 60
what is 8 divied by 5/8? what is 1 and 5/8 divied by 2 and 1/2?
Sharing fruit. Apples are collected in a basket for six people. One third, one fourth, one eighth, and one fifth of the apples are given to four people, respectively. The fifth person gets ten apples, and one apple remains for the sixth person. Find the original number of apples in the basket.
You are given a multiple choice test consisting of 10 questions. Each question has 3 choices. If you guess at all of the answers, what is the probability that you will choose the incorrect answer for each question?
What is the product of the numerators when 4/8 and 8/10 are written in lowest terms? (A) 2 (B) 4 (C) 8 (D) 16 (E) 32
You got 70 questions on a test right. You received a score of 80%. How many total questions were on the test? You scored an 80% on a test. The test had a total of 75 questions on it. How many questions did you get correct? You took a test that had 60 questions on it. You got 20 questions wrong. a what fraction of the questions did you get right? b what percentage of the questions did you get right? Thanks for your help
A trip to New Hampshire to Boston will take you 2 3/4 hours. Assume you have traveled 1/11 of the way. How much longer will the trip take? Tempco Corp has a machine that produces 12 1/2 baseball gloves each hour. In the past 2 hours, the machine has run for a total of 22 hours. How many baseball has Tempco produced?
Explain in your own words, using the definition of probability why: a) the probability of an event that cannot occur is 0; b) the probability of an event that must occur is 1. i posted this in class:P(event) = (# of ways to succeed)/(# of ways to succeed + # of ways to fail) a)the probability of an event that cannot occur is 0 If it cannot occur the # of ways to succeed is zero Then P(event) = 0/(# of ways to fail) = 0 b) the probability of an event that must occur is 1. If it must occur the # of ways to fail is zero Then P(event) = (# of ways to succeed)/(# of ways to succeed) = 1 but my teacher wants something more detail as an explanation.. Can you please help.. I do not know what she wants from me...
what is the answer 1/5+7/10=
There are 464 students in a school. Five-eights of them are girls. How many girls are there in the school? How many are boys?
p=14,000, m = 14, r = 6% compounded annually
Nita can mow a lawn in 90 minutes. Pedro can do it in 60 minutes. If Pedro starts 10 minutes after Nita has begun, how many minutes are needed to mow the lawn?
the markup on a rug is $56. if the dealer uses a 35% markup on the cost,what was the cost of the rug ?
The daily circulation of the largest newspaper in the country is about 1.75 million. The daily circulation of the third largest newspaper in the country is about 1.02 million. Express the relative difference using a percentage. Use the second given value as the reference value. Also, write a statement describing the result. a. The relative difference between the largest and third largest newspaper in the country is ___% (Round to the nearest integer as needed.) b. The largest newspaper has ___% more circulation than the third largest.
Sally spent 1/8 of her money on comic books and 1/4 of her money on videos. She had $25 left. How much money did Sally have before buying the comic books and videos?
How many gallons of a 60% antifreeze solution must be mixed with 90 gallons of 10% antifreeze to get a mixture that is 50% difference?