15 For exercise, Cindy swims every 6 days and jogs every 8 days. She did both today. How many days from now until she swims and jogs again

24 days

Step-by-step explanation:

To find the answer we need to find the LCM

first, find the prime factorization of 6 and 8

6=2*3

8=2^3

8*3=24

So she'll swim and jog on the same day in 24 days

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

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