Quantitative Aptitude Test 115

Test # 115


1.
Three taps are connected to a water tank. First and second taps till it up in 'x' minutes and 'y' minutes respectively, when they arc opened separately. The third tap empties the full tank in 'z' minutes. If all are opened simultaneously, what is the condition required on 'x', 'y' and Y to ensure that the tank will actually fill up?

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Quantitative Aptitude
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Idiom of the Day

learn (something) from the bottom up
to learn something from the beginning
The young man learned about the company from the bottom up before his father retired.

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Science Experiments Ideas

Maze

Plant a sprouting potato in moist soil in a pot. Place it in the corner of a shoebox and cut a hole in the opposite side. Inside stick two partitions, so that a small gap is left. Close the box and place it in a window. After a couple of days the shoot has found its way through the dark maze to the light.
Plants have light sensitive cells, which guide the direction of growth. Even the minimum amount of light entering the box causes the shoot to bend. It looks quite white, because the important green colouring material, chlorophyll, necessary for healthy growth, cannot be formed in the dark.

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