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Nadusha1986 [10]
4 years ago
7

When Derek planted a tree it was 36 inches tall. The tree grew 1 1/4 inches per year. The tree is now 44 3/4 inches tall. How ma

ny years ago did Derek plant the tree?
Mathematics
1 answer:
KIM [24]4 years ago
6 0
Original Height = 36 inches.

Change in height:

44\dfrac{3}{4} - 36 =  8\dfrac{3}{4}

Number of years : 

8\dfrac{3}{4} \div  1\dfrac{1}{4}

=\dfrac{35}{4} \div  \dfrac{5}{4}

=\dfrac{35}{4} \times  \dfrac{4}{5}

=7

---------------------------------------------------------------
Answer; Derek has planted the tree for 7 years.
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