Mrs Finch first grade class was holding a used book sale. Some books were sold for $0.25 and others sold for $0.35. The first customer spent 3.15 for 11 books? How many $0.25 books and $0.35 books did the customer buy?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.