Question

How many meters are there in a kilometer? And how many centimeters are there in 1.5 meter?
$\left( a \right)$ 1000, 150
$\left( b \right)$ 1000, 1000
$\left( c \right)$ 1000, 100
$\left( d \right)$ 1500, 150

Answer 1

Hint: In this particular question use the concept that kilo refers to thousand i.e. 1000, and use the concept that in 1 meter there are 100 cm, so use these concepts to reach the solution of the question.

Complete step-by-step answer:
Now, we have to find out how many meters are there in a kilometer.
As we all know that kilo refers to thousand i.e. 1000.
So 1 kilometer there is 1000 meter.
I.e. 1 kilometer = 1000 meters.
Hence there are 1000 meters in 1 kilometers.
Now we have to find out how many centimeters are there in 1.5 meters.
As we all know that in 1 meter there are 100 centimeter.
I.e. 1 meter = 100 centimeters
Now multiply both sides by 1.5 in the above equation we have,
Therefore, 1.5 (1) meter = 1.5 (100) centimeters.
Now simplify we have,
Therefore, 1.5 meters = 150 centimeters.
Hence there are 150 centimeters in 1.5 meter.
Hence option (a) is the correct answer.

Note:Whenever we face such types of questions the key concept we have to remember is that we always recall that in a kilometer there are 1000 meters and in a meter there are 100 centimeter so in 1.5 meter there are 150 centimeters.