To find the number for which one fifth equals 18, you can set up the equation ( \frac{1}{5} \times x = 18 ). Multiplying both sides by 5 gives ( x = 90 ). Therefore, the number is 90.
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One fifth is a rational fraction. It is not a whole number and cannot be made into one.
-- To add one fifth to a number, add 0.2 to it. -- To find a new number that is one fifth bigger than the original number, multiply the original number by 1.2 .
One-fifth is 1/5 or 0.2
12
25-n/5=18 -n/5 = 18-25 -n/5=-7 -n=-7*5 -n=-35 n=35