If 16℅ of 40℅ of a number is 8, then the number is [#872]

125

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125

The perimeter is the distance around a shape, like the distance around a rectangle, triangle, or circle.

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The perimeter is the distance around a shape, like the distance around a rectangle, triangle, or circle.

A pentagon is a polygon with five sides, like the shape of the Pentagon building in Washington, D.C.

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A pentagon is a polygon with five sides, like the shape of the Pentagon building in Washington, D.C.

41

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41

The difference of speed = 22m/s - 20m/s = 2m/s As the train with speed 22m/s will cross the other, hence this train have to go the smallest length of the trains distance ahead of the other to cross completely. Hence This train will be ahead of 100m with a speed of 2m/s. Hence The time to cross each other will take = 100m / (2m/s) = 50 sec

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The difference of speed = 22m/s - 20m/s = 2m/s As the train with speed 22m/s will cross the other, hence this train have to go the smallest length of the trains distance ahead of the other to cross completely. Hence This train will be ahead of 100m with a speed of 2m/s. Hence The time to cross each other will take = 100m / (2m/s) = 50 sec

27

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27

(1000+100)m / (20m/s) = 55 seconds

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(1000+100)m / (20m/s) = 55 seconds

18

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18

An integer is a whole number, either positive, negative, or zero, without a decimal or fractional part, such as 5, -3, or 0.

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An integer is a whole number, either positive, negative, or zero, without a decimal or fractional part, such as 5, -3, or 0.

1

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1

Net change (-40 + 20 + $\frac{(-40)*20}{100}$)% = (-20 + $\frac{-800}{100}$)% = (-20 - 8)% = -28% = 28%

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Net change (-40 + 20 + $\frac{(-40)*20}{100}$)% = (-20 + $\frac{-800}{100}$)% = (-20 - 8)% = -28% = 28%