Related Questions

The ratio of boys to girls in class A is 3 to 4 . The ratio of boys to girls in class B is 4 to 5 . If the two classes were combined, the ratio of boys to girls in class B is two less than the number of girls in class A. How many girls are in class A?
A 87
B 11
C 12
D 15
Three maths classes: X, Y, and Z take an algebra test. The average score of class X is 83. The average score of class Y is 76. The average score of class Z is 85. The average score of class X and Y is 79 and the average score of class Y and Z is 81. What is the average score of the combined classes X, Y, and Z?
A 81
B 81.5
C 82
D 84.5
Which of the following constructor of class Thread is valid one?
A Thread(Runnable threadOb, int priority)
B Thread(int priority)
C Thread(Runnable threadOb, String threadName)
D Thread(String threadName, int priority)
E None of these
At the beginning of a class period, half of the students in a class go to the library. Later in the period, half of the remaining students go to the computer lab. If there are 5 students remaining in the class, how many students were originally in the class?
A 12
B 16
C 24
D 32
Assume that we have to convert “false” that is a non-string to string. The command that we use is (without invoking the “new” operator)
A false.toString()
B String(false)
C String newvariable=”false”
D Both false.toString() and String(false)
It will take john 4 days to string a certain fence. If Mary could string the same fence in 3 days, how long will it take them if they work together?
A 3 1/2 days
B 3 days
C 2 1/2 days
D 1 5/7 days
Which function is used to split a string into a series of substrings, with each string boundary is determined by a specific separator?
A break()
B divide()
C explode()
D md5()
The ends of a string weighing w/metre are attached to two points at the same horizontal level. If the central dip is very small, the horizontal tension of the string throughout is
A $$\frac{{{\text{w}}l}}{{4{\text{d}}}}$$
B $$\frac{{{\text{w}}{l^2}}}{{4{\text{d}}}}$$
C $$\frac{{{\text{w}}{l^2}}}{{8{\text{d}}}}$$
D $$\frac{{{\text{w}}{l^2}}}{{16{\text{d}}}}$$
Half the graduating class of a college was accepted by a business school. One-third of the class was accepted by a law school. It one-fifth of the class was accepted by both types of school, what fraction of the class was accepted only by a law school?
A 2/15
B 1/6
C 1/3
D 1/2
The ratio of boys and girls in a class is 1:2 and the class as 24 students . How many boys would have to be admitted to the class in order to make the ratio of boys to girls 1 : 1?
A 6
B 8
C 10
D 12

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