Veronica gave 20% of her money to Bill. She used 50% of the remaining money to buy books.

If Veronica gave $35 to Bill, she spent $
a) 70
b) 87.50
c) 180

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

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