6 boys take part in a relay event each boy runs 3/4 of a mile , how far do they run altogether ? please help , thanks ?

In my head I just multiplied 0.25 by 6 and took the answer away from 6. Took about 4 seconds.

For speed always do the easiest sums possible.  It takes longer for me to multiply 0.75 by 6 than to do it the way I did.

4 1/2 miles.  6 x 3/4 equals 4.5

# of boys x distance run by each = total distance OR distance run by boy + distance run by boy + distance run by boy + (add distance for each boy who ran) = total distance run (very basic math problem).

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Take 3/4 mi and add it six times, one time per boy.  So you have 3/4 + 3/4 + 3/4 + 3/4 + 3/4 + 3/4 = 18/4 miles.

You don’t know how to multiply 6 * 3/4 or 6 times .75.