Is the ratio 15 : 12 equivalent to 5 : 3 and 10 : 6? Explain.

Yes it is

Step-by-step explanation:

When we simplify 15:12, we receive 5:3

Therefore, 5:3 is equvilaent to 15:12

Using this unit ratio, we can solve for other rations

For example, 5:3, the unit ratio, times 2 is 10:6

5 * 2 = 10

3*2 = 6

10, 6 = 10:6

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )