Mark can clean his father's office in 30 minutes. His younger sister Lynn can clean the office in 40 minutes. How long will it take if they come together and clean the office

In a survey of 100 Enormous State University students, 25 enjoyed classical music, 20 enjoyed rock music, and 25 enjoyed house music. Five of the students enjoyed both classical and rock.

A baby gains 11 pounds in its firat year of life. The baby gained 4 pounds during the first four months and second four months. How much did the baby gain in the last four months? 3 1/4 pounds 3 1/2 pounds 4 pounds 5 pounds

In a city school, 65% of students have green eyes, 25% have red hair, and 15% have green eyes and red hair.

50 centimeters to meters 6.3 meters to centimeters

Find the product of 6/7•5/7

Why can't I find science I'm having trouble with science

Give me a multistep problem that has at least two amounts of elapsed time a problem that require finding a starting time or ending time

Simplified form for x-1+4+7x-3

4. Solve using elimination. 4x - 3y = 9 3x + 2y = 11 Download pdf

What is the radius of a 12 feet circle