Related Questions

A sport goods store ordered an equal number of white and yellow tennis balls. The tennis ball company delivered 30 extra tennis ball, making the ratio of white balls to yellow balls 6:5, How many tennis ball did the sport goods store originally order?
A 150
B 180
C 300
D 330
In a group of 15 high school students, 7 study Latin, 8 study French and 3 study neither Latin nor French. How many students study both Latin and French?
A 3
B 4
C 6
In a group of 15 high school students, 7 study Latin, 8 study French, and 3 study neither Latin nor French. How many students study both Latin and French?
A 3
B 15
C 4
In group of 15 high school students, 7 study Latin, 8 study French and 3 study neither Latin nor French. How many students study both Latin and French?
A 3
B 15
C 4
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If Z is open, which of the following must be true?
A S is open
B T is open
C U is open
D y is open
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If R is closed and U is open, which of the following must be true?
A S is open
B T is open
C T is closed
D Y is closed
60% of the students of a college are male. 60% of the male in the college speak French and 40% of the students of the college speak French. What percent of the female in the college do not speak French?
A 40%
B 90%
C 10%
D 36%
60% of the students of a college are male. 60% of the males in the college speak French and 40% of the students of the college speak French. What is the percentage of the females in the college who do not speak French?
A 40%
B 90%
C 60%
D 85%
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. If the maximum number of valves that can be closed at the same time are closed which of the following must true?
A R is open
B S is open
C T is open
D Z is open
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. Which of the following, if given to the mixing vat operator as an instruction, would not determine the setting of any other valve ?
A S must be open
B T must be open
C U must be open

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