A train traveling at 48 kmph completely crosses another train having half its length and traveling in opposite direction at 42 kmph, in 12 seconds. It also passes a railway platform in 45 seconds. The length of the platform is
C
Latest Answer: 13=13w/(1-w) find (2w)2 13(1-w)=13w 13-13w=13w 26w=13 w=1/2 (2w)2=2(1/2)2 =2 ...
In a class composed of x girls and y boys what part of the class is composed of girlsA.y/(x + y)B.x/xyC.x/(x + y)D.y/xy
C
What is the maximum number of half-pint bottles of cream that can be filled with a 4-gallon can of cream(2 pt.=1 qt. and 4 qt.=1 gal)A.16B.24C.30D.64
D
If the operation,^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^ 3A.0B.1C.-1D.4
B
A coffee shop blends 2 kinds of coffee, putting in 2 parts of a 33p. a gm. grade to 1 part of a 24p. a gm.If the mixture is changed to 1 part of the 33p. a gm. to 2 parts of the less expensive grade, how much will the shop save in blending 100 gms.A.Rs.90B.Rs.1.00C.Rs.3.00D.Rs.8.00
C
There are 200 questions on a 3 hr examination. Among these questions are 50 mathematics problems. It is suggested that twice as much time be spent on each maths problem as for each other question. How many minutes should be spent on mathematics problemsA.36B.72C.60D.100
B
In a group of 15,7 have studied Latin, 8 have studied Greek, and 3 have not studied either. How many of these studied both Latin and GreekA.0B.3C.4D.5
B
A
Latest Answer: the answer is A(b
In June a baseball team that played 60 games had won 30% of its game played. After a phenomenal winning streak this team raised its average to 50% .How many games must the team have won in a row to attain this average?A. 12B. 20C. 24D. 30
C
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