Solve the problem.Frank can type a report in 6 hr. James can type it in 4 hr . How long will it take the two of them working together?

A. 12 hr
B.  hr
C.  hr
D. 2 hr


Answer: D

Mathematics

You might also like to view...

Perform the indicated operation without the use of a calculator and express each answer in scientific notation.

A. 2 × 1015 B. 2 × 101 C. 2 × 10-15 D. 2 × 10-1

Mathematics

Solve the problem.Find the length of the unknown side of the right triangle, where a and b are the legs and c is the hypotenuse. a = 6, b = 8, c = ?

A. c = 10 B. c = 7 C. c = 9 D. c = 5

Mathematics

Find the asymptotes of the hyperbola.x2 - y2 - 2x - 8y - 40 = 0

A. y + 1 = (x - 4) and y + 1 = - (x - 4)
B. y - 1 = (x + 4) and y - 1 = - (x + 4)
C. y + 4 = (x - 1) and y + 4 = - (x - 1)
D. y + 4 = (x - 1) and y + 4 = - (x - 1)

Mathematics

Insert <, >, or = between the pair of numbers to form a true statement.0.163  0.193

A. < B. = C. >

Mathematics