Anna and betty shared sum of money in the ratio 2: 3. ann received $120. what was bettys share?

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How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30