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In what ratio must water be mixed with milk costing Rs. 12 per liter to get a mixture worth Rs. 9 per liter?
A1:3
B1:4
C2:3
D3:4
A worker’s salary is increased by 10% and then decreased by 10%. What is the net percentage change?
ANo change
B1% increase
C1% decrease
D2% decrease
A pole cast a shadow 10 m long when the elevation of the sun is 45°. What is the height of the pole?
A5 m
B10 m
C10*sqrt(3) m
D20 m
What is the volume of a cube whose side length is 6 cm?
A144 cm³
B180 cm³
C216 cm³
D256 cm³
If 12 men or 18 women can finish a task in 14 days, how long will 8 men and 6 women take to finish the same task?
A10 days
B12 days
C14 days
D16 days
If 6 men can complete a job in 8 days, how many days will 4 men take?
A10 days
B12 days
C14 days
D16 days
Find the perimeter of an equilateral triangle with an area of 9*sqrt(3) cm².
A12 cm
B18 cm
C24 cm
D36 cm