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ycow [4]
3 years ago
14

1. The number a is 4/5 of the number b. What part of number a is number b?

Mathematics
1 answer:
alexdok [17]3 years ago
7 0
Writing some equations out might help!

1) You know that a is 4/5 of b. This can be written as:a =  \frac{4}{5} b.
To find what b is equal to, multiply both sides by 5/4: \frac{5}{4}a = b.
A is 5/4 B. 

2) You know that a is 1/5 smaller than b. This can be written as: a = b - \frac{1}{5}.
To find b, just add 1/5 to both sides: a +  \frac{1}{5} = b.
B is 1/5 bigger than a. 
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2 years ago
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