2/5 y = 10
Multiply each side by 5:
2 y = 50
Divide each side by 2:
y = 25
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Two fifths of 25 would be 10.
one fifth would be 2 pounds. 10/5=2 so two fifths would 10/5x2=4 two fifths of 10 pounds =4 pounds
To find out how many fifths are in two and two-fifths, we first need to convert the whole number, two, into fifths. Since one whole is equal to five fifths, two wholes would be equal to ten fifths. Adding the two-fifths gives us a total of twelve fifths in two and two-fifths.
The equal fraction to two fifths is four tenths.
10 of them.