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NikAS [45]
3 years ago
12

One third of a number, z, added to one fifth of the same number is 3/5 . What is the number and why?

Mathematics
1 answer:
Lesechka [4]3 years ago
3 0
Let
z--------> the number

we know that
<span>One third of a number, z, added to one fifth of the same number is 3/5 
</span><span>so
the equation that represents this sentence is 
</span>(1/3)z+(1/5)z=3/5
(5+3)z/15=3/5----------> 8z=9-------> z=9/8

therefore

the answer is the option
<span>D) 9/8 , because the equation that represents this sentence is 1/3z+1/5z=3/5 .</span>
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