Mrs. Murphy bought balloons, garlands, paper lanterns, and banners to
decorate for a school party. She bought 3 times as many bags of balloons
as paper lanterns, 7 more garlands than paper lanterns, and 4 banners. She
paid $5.25 for each banner, $6.50 for each paper lantern, $5 for each bag
of balloons, and $3.50 for each garland. How many of each kind
of decoration did she purchase if she paid $145.50? please help