Gimme the right answers, plz 10+ pts :3

1) Steve can save 9 dollars every day while Maria can save 12 dollars every day. What is the least number of days it will take each person to save the same amount of money?

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2)Boxes that are 12 inches tall are being piled next to boxes that are 10 inches tall. What is the least height in feet at which the two piles will be the same height?

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3)A radio station plays "yesterday" by the Beatles once every 2 days. Another radio station plays the same song once every 3 days. How many times in 30 days will both radio stations play the same song on the same day?