Add. 1/2 + 3/4 + 1/2 = ?
a. 5/8
b. 5/4
c. 1 3/4
d. 1 7/4

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

What numbers are included in the set of integers? what numbers are not included?

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?