Henri surveys his 20 classmates about the number of times they go swimming per week during the summer. he finds that 6 of his classmates go less than 2 times a week, while 9 his his classmates go more tha 20 times a week . the other 5 classmates go between 4-6 times a week would the mean be greater than or less that the median

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

On saturday a souvenir shop had 125 customers. sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?