You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

Q: At the beach, Janet and her sister both built sandcastles and then measured their heights. Janet's sandcastle was 3.6 feet tall and her sister's was 2.3 feet tall. How much taller was Janet's sandcastle than her sister's?

A: 1.3
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Q: Sandy grew 6 carrots. Sam grew 3 carrots. How many carrots didthey grow in total?

A: 9.0
****
Q: Benny picked 2 apples and Dan picked 9 apples from the apple tree.How many apples were picked in total?

A:
11.0
****