multiplication

The anti-inflammation drug Advil has a half-life of 2 hours. That is, the amount of the drug present in the body is halved every two hours. What fraction of the initial amount of the drug will be left in the body after 4 hours? At time 0, we have 100% At time 2, we have 100% * 1/2 = 50% or...

The 4/7 part of a number is 84 . What is the number? We multiply 4/7 * 84. 7 goes into 84 12 times, so we have: 4 * 12 = 48

There are 50 pairs of pants. One-half of the pants are black. One-fifth of the pants are tan. How many pairs of pants are not black or tan. First, determine what fraction of pants are black and tan: 1/2 + 1/5 Using our fraction addition calculator, we get 7/10. So the rest of the pants are 1...

There are 377 baseball teams at the tournament and each team has 228 players. How many players are at the tournament? Key words are "There are", "each team", and "how many". We multiply teams by players per team to get number of players. 377 * 228 = 85,956

Georgina has 9 bags of shaved coconuts. If each bag weighs 1/2 pounds what is the total weight of the bags? We take 9 bags * 1/2 pound per bag = 4.5 total pounds.

double 6 , divide the result by y ,then raise what you have to the 10th power Take this in pieces: Double 6 means multiply 6 by 2 --> 6(2) = 12 Divide the result by y: 12/y Then raise what you have to the 10th power: (12/y)^10

A store owner bought 240 cartons of eggs. The owner sold 5/8 of the eggs and set aside 5 cartons. How many cartons of eggs did the owner have left to sale? If the owner sold 5/8 of the eggs, they have 1 - 5/8 left. 1 = 8/8, so we have 8/8 - 5/8 = 3/8 left 3/8 (240 cartons) = 90 cartons...

Kevin saw the hit movie at the theater on sunday. On Monday, Kevin told 4 friends about the movie. The day after that, each of those friends told 4 more friends about the movie. If this pattern continues, how many people would have been told about the movie by Friday. Monday: 4 Tuesday: 4 x 4 =...

Yolanda had 9 cookies in a jar. She then bought 6 bags of 13 cookies each. How many cookies does she have now? 6 bags * 13 cookies each = 78 cookies. 78 cookies added to the original 9 in the jar = 87 cookies.

There are 35 peanuts in every bowl. How many peanuts are there in 5 bowls? How about in 7 bowls? 5 bowls: 35 peanuts per bowl * 5 bowls = 175 peanuts 7 bowls: 35 peanuts per bowl * 7 bowls = 245 peanuts

Earnings = Hours Worked * Hourly Rate Earnings = 40 * 9.50 Earnings = 380