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Two liters of a 20% alcohol solution is mixed with x liters of
a 50% alcohol solution. if the new mixture contains 38%
alcohol, what is the value of x?
Tommy’s age is the sum of the ages of Carmen and Dennis.
Carmen’s age is 2 more than the sum of Dennis and Mark.
Dennis’ age is 4 times Mark’s age. The sum of all four ages is
42. How old is Mark?
A is 8% taller than B, while B is 9% taller than C. by how much
in percent is A taller than C?
A is 12% older than B, while B is 11% older than C. By how
much in percent is A older than C?
What time after 3 o’clock will the hands of the clock be
together for the first time?
In how many minutes after 2 o’clock will the hands of the
clock extend in opposite direction for the first time?
At what time after 12:00 o’clock midnight will the minute
hand and the hour hand of a clock be on a straight line for
the first time?
After how many minutes from 12:00 o’clock noon will the
minute hand and the hour hand of the clock makes and
angle of 120degrees for the first time.
The hour hand of a huge clock is 100cm long. What is the
circumferential speed of the tip of this hand in cm/hr.?
There are 4 geometric mean between 3 and 729. Find the
sum of the G.P.
