Question

If A is moving with a speed of 20 m/hr and B is moving with a speed of 1 m/min which of the two is faster

Answer 1

Whenever any comparison is to be done among given quantities then we must ensure that all the quantities being compared should have same units.

Here,

Speed of A = 20 m / hr
Speed of B = 1 m / min

Now we can either convert speed of A into m / min or convert speed of B into m / hr.

Let us convert the speed of B into m / hr,

Speed of B = 1 m / min

We know that 1 min = 1/60 hour

So,

Speed of B = { 1 / ( 1 / 60 ) } m / hr
Speed of B = 1 * 60 m / hr = 60 m / hr

Now,

We can see that 60 > 20 so,

Speed of B > Speed of A

Therefore,

B is faster than A.

Answer 2

The question asks to which one of the speeds 20 m / hr and 1 m / min

    In 1 minute, B goes 1 meter

    ⇒ In 60 minutes, B goes 60 meter

    ⇒ Speed of B is 60 m / hr

Given that, speed of A is 20 m / hr

We know that, 60 > 20 and therefore B is faster than A

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