Erin has 3 guppies more than zebrafish and has twice as many zebra fish as goldfish. If Erin has 23 fish total, how many of each of the fish does Erin have?

Calculate the theoretical probability that sum of 2 rolls equals 7

Design an algorithm (expessed in pseudocode) for finding all the factors of the positive integer for example in the caseof the integer 12, your algorithm should report 1, 2, 3, 4, 6 and 12.

How many patients in the hospital were at least 60 years old? 55 45 115 70

93, 94, 95, 89, 85, 82, 87, 85, 84, 80, 78, 78, 84, 87, 90. -Calculate the mean and median closing price.

A clothing store spends $11 for each pair of shorts it produces and has fixed costs of $450. If the store makes 40 pairs of shorts, how much should the store charge for each pair of shorts in order to break even?

Margaret said that 1/5 of her class was absent today. What percent of the class was absent?

A colony of bees have produced about 4 oz of honey. Some time later they have about 7oz of honey. If the bees produce at a rate of 1.5% per hour, how many hours did it take?

Three consecutive integers have a sum of 87

How can you write the prime factorization and find the greatest common factor and least common multiple of two numbers?

Complete the equivalent fractions: 3 / = 15/20 = / 100