Calvin finds that the volume of laughter in response to his jokes (v) varies directly with the square of the number of people present (p), but inversely to the length of time to tell the joke (t)...
Calvin finds that the volume of laughter in response to his jokes (v) varies directly with the square of the number of people present (p), but inversely to the length of time to tell the joke (t)...
A motorboat takes 4 hours to travel 128km going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of...
The hypotenuse of a right triangle is 20 cm. One of the legs is 4 cm longer than the other leg. Fid the value of x. (Hint: Use the Pythagorean Theorem.)
an instrument store gives 10% discount to all students off the original cost of instrument. during back to school sale on additional 15% is taken off the discounted price. Julie a student at the local...
a plane flew 70 miles with the wind from city A tto City B. He flew back to city A aginst the wind. If the wind was a constant of 30 miles per hour and the total going and reuturing time was 1.2 hours...
Fritz normally commutes at an average speed of 15 miles per hour, but this morning's heavy traffic held him to only 12 miles per hour. He must determine whether he can drive home fast enough this...
from a group of boys and girls. 15 girls leave there are then left 2 boys for each girl. after this 45 boys leave. there are then 5 girls for each boy find the number of girls in the beginning please...
an instrument store gives 10% discount to all students off the original cost of instrument. during back to school sale on additional 15% is taken off the discounted price. Julie a student at the local...
ribbons costing $ 0.20 each mixed with ribbons coasting $ 0.15 each. the mixture costs $1.20. the number of $0.20 ribbons is 3/4 of the 0.15$ ribbons find the number of each type of ribbon in the...
Need some help getting started with this one please.. The facility can make at most 100 tires a day. Each large tire requires 2 lbs of rubber, and each small tire requires 1 lb of rubber...
doreen is a chemist. she needs to prepare 28 ounces of a 11% acid solution. find the amount of 14% solution and the amount of 7% solution she should mix to get this solution how many ounces...
A train leaves Watsonville at noon traveling north at 44mph l. One hour later, another train, going 52mph, travels north on a parallel track. How many hours will the second train travel before it...
Sean has $86 to spend. He can spend all d it on one CD and two DVDs, or he can but two CDs and one DVD and have $16 left over. What is the price of a CD? Of a DVD?
A stone mason has enough stones to enclose a rectangular patio with a perimeter of 60ft, assuming that the attached house forms one side of the rectangle. What is the maximum area that the mason can...
As part of a 6th grade class project, the teacher brings to class a large jar containing 200 gumballs of two different colors; red and green. Andy is asked to draw a sample of his own choosing and...
kevin and randy have a jar containing 28 coins, all of which are quarters or nickels. the total vALUE of the coins in the jar is $4.00 how many of each type of coin do they have?? __...
Two trains leave the station at the same time, one heading west and the other east. The westbound train travels 18 miles per hour slower than the eastbound train. If the two trains are 320 miles apart...
Octavian invests some money at 8.5% and half as much at 10%. in time, he receives $1000 interest. how much did he invest at each rate?
Warren drives his car 90 miles and has a mean of a certain speed. If the mean speed had been 4 mph more, he could have traveled 102 miles in the same length of time. What was his mean speed?
Joe and Bob had to pick rocks from the baseball field. Joe could do it alone in 3 hours. Bob could finish alone in 2 hours. How long would it take them to finish the job together?