Question
A boat can travel 7.2 km upstream in 18 min. If the
ratio of the speed of the boat in still water to the speed of the stream is 7:1. How much time will the boat take to cover 17.6 km downstream ?Solution
Speed = 7x : 1x
Downstream = 8x; upstream = 6x
Upstream speed = 7.2 x (60/18) = 24 kmph
6x = 24
x = 4
Downstream = 8 x 4 = 32
Time taken for 17.6 km = 17.6 x (60/32) = 33 min
Conclusions:
A few books being pencils is a possibility.
Mostly pens is not erasers.
Some colours are pens.Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at varianc...
Statements:
Some pen are pencil
No pencil is a mobile
All mobile are laptop
Conclusion:
I. All pen can never be mobile
II. Some laptop can be pen
Statements: Some giraffe are zebra.
                          All zebra are kangaroo.
Conclusions: I. Some gir...
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at varian...
Statements:
All Paint is Bucket
All Bucket is Plastic
No Plastic is Harmful
Conclusions:
I. Some Paint can be P...
Statements:Some pastries are cakes.
No cake is a pudding.
All puddings are sweets.
Conclusions:I. Some sweets are not cakes.
Some paints are not wires. Some cables are not bulbs. Some paints are not bulbs
Statements: Some printers are monitors.
All monitors are modems.
Some modems are keyboards.
Conclusions: I. Some keyboards are no...
Statements:No town is a city.
All cities are islands.
Conclusions:I. No island is a town. Â
II. All islands are cities.
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