There are 12 gray marbles in a jar and eight white marbles. What percent of marbles are white. Explain answer pls.

40 %

Step-by-step explanation:

8/20 is 40% and 12/20 is 60%

AWNSER:

40%

EXPPLENATION:

1. you need to find how many marbles are in the bag in total. e.g.(20)

2. find out how many of the marbles are blue and put it into a fraction blue/total number of marbles. e.g.(8/20)

3.multiply the fraction so that you have 100 as your denominator since 'per-cent' means out of 100. e.g.(8/20 x 5= 40/100)

4. remove the fraction/ take off the 100 and your done

:D

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.