jatinet

Machine A can produce 10 products in x minutes and machine B can produce 30 products in y minutes. Starting the work at the same time, how many hours later, B will produce 16 more products than A?

can you please explain how you get the common area

I made a tiny (but careless) mistake :=> 0.89C + 1.7T = 1.01C + 1.01T thanks guys

There are 5 numbers in set X, which mean is greater than its median. There are 7 numbers in the set Y, which mean is greater than its median also. If Z consists of X and Y, which have no common numbers, is mean of Z greater than its median? 1) Mean of X is less than mean of Y 2) Median of X is less than median of Y I was able to find the answer but my approach (plugging numbers) took considerable time. Has anyone got quicker approach to such problems. ? Also, in terms of difficulty level where would you guys put such problem?

A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996? 1:2, 4:5, 1:1, 3:2, 5:3 I am not getting one of the answers :mad: may be making some silly mistake

In the xy-plane, what is the area of the region of x>2, y>3 and y Please explain your reasoning

agree with rv_blitz

Formula for Hexagon was a seprate question

Q1: A] denotes the product of all the even numbers less than A, for example, [A]=2*4*6*8. What is the greatest prime factor of the number [22]+[24]? Quickest way of solving such problems? Q2: A kind of telephone exchange can provide 7-digit telephone number which first 3 digits are fixed, for example, 921xxxx. What is the minimum possible numbers required by exchange to generate 282000 numbers? 28, 29, 280, 282, 290 Q3: What is the median of the 15 consecutive integers? 1) The median of the first 7 numbers is 15 2) The median of the latter 7 numbers is 17 Q4: x^2 +2qx+ r =0 , ask for the numbers of intersection with X-axis. 1) q^2>r 2) r^2>q Q4: 2 black-white TV sets and 6 color sets. Without replacement, 2 sets are selected randomly. What is the probability that at least 1 set is black-white? 1/4, 1/5, 1/8, 11/28, 13/28 Q5: There are 11 women and 9 men in a certain club. If the club is to select a committee of 2 women and 2 men, how many different such committees are possible? 120 720 1,060 1,520 1,980 Q6: R and s is tens' digit of x and y, respectively. Is r 1) x 2) 10 Q7: m>0, n>0. m*n=? 1) 4^m=2^n 2) 2^m=3^n

There are 2 car-renting companies X and Y. The cost for renting a car from X is: 30+0.2*(m-100). Where 30 is the base cost for each day and m is the total miles of each day. The cost for renting a car from Y is $65 for each day. Someone will rent a car for 3 days. If he run equal miles in each of the 3 days, he must run how long in the 3 days so that he will pay the same cost no matter he rent the car from X or Y?No OA given

Q1: A rectangle is 10 long and 8 wide. The area of a regular road surrounding the rectangle is 144. What is the width of the road? Q What is the formula for the area of the right hexagon?

(MUEUS) = (M)+(E)+(S) - (MUE) - (MUS)- (EUS) gives 74

Q1: A room is 16 feet long, 12 feet wide, and 10 feet high. There is a light on the center of the ceiling to illuminate all the room. What is the approximate distance from the light to the farthest point of the room?Q2: A line's slope is M and its intercept on the axis-y is N. In the same plane, there is a circle, which centre is origin and the radius is R. How many intercepts does the line have with the circle? 1) R^2 2) R^2 My take is D. Q3: Of a pile of photos, 60% are landscape photos, 80% are colour photoes, 10% are neither landscape nor colour. What percent of the photos is colour landscape? My take is 10% Q4: Money held by john increases by same percent every year. If on Jan 1 1992 money was k and in Jan 1 1994 money was m then what was the increase in terms of m and k. Q5: perimeter of a rectangular park = 580 and length of diagnoal = 200 what is the area of the park Q6: a three digit code is formed from digits 0,1,2,3,4,5,6,7,8,9 such that first digit can not be either 0 or 1, second digit can only be zero and 1, and second and third digit can both together not be 0. How many number of 3 digit codes can be formed? Q7: Right triangle RST, RS and ST are legs and their sum is 12, RT=10. What the area of the triangle?

marichi, how do u get area of R= xy/2x and area Q=6y/5

A painter painted a white circular area, which is inscribed a blue square. When he finished, what is the ratio of the blue area to the whole square? please explain your answers