Math help # 2 (look below)?

Andrew's parents follow a regular schedule for taking care of the new car. They change the oil every 3,000 miles,rotate the tires every 10,000 miles and replace the windshield wipers every 15,000 miles.



How many miles will they first have to change the oil, rotate the tires and replace the windsheild wipers all at once

(please Explain)Math help 2 (look below)?
Find the LCM of (3000), (10,000) and (15,000)



This would be 30,000 milesMath help 2 (look below)?
30,000 miles. It is the least common multiple.Math help 2 (look below)?
30,000 miles because 15,000x2=30,000and 10,000x3=30,000and3,000x10=30,000. It can't be any lower than that because of the 15,000. This is also because 10,000 can not multiply a whole number and equal 15,000. I hope this helps you.

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