driving math question

Question

A family is going on a 603-mile car trip. So far they have driven 24% of the distance.

Which is the best estimate for the number of miles they have driven so far?

Answer 1

Since your question states what is the best "estimate" I assume you want merely an estimation that you can quickly find by doing mental math. If this is the case, you want to round your number to a number that will be easier to do mental math with and for your percentage, try to round it near one you can easily do in your head as well.

 

For example, if you round 603 to 600 and realize that 24% is very close to 25% then, you can ask yourself what is 25% or one quarter of 600?

 

The answer would be 150 miles as your estimation.

 

 

The exact answer is found by multiplying 603*.24=144.72 miles

 

Therefore, 150 would be a good estimation.

 

Hope this helps.