After Elsa baked muffins, her brother ate 4 of them. He ate 2 5 of all of the muffins. How many muffins did Elsa bake? Let m = the number of muffins baked. Which equation will solve the problem? m minus two-fifths = 4 m + two-fifths = 4 4 m = two-fifths Two-fifths m = 4
Mathematics · College · Sun Jan 24 2021
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Given the statement:
After Elsa baked muffins, her brother ate 4 of them. He ate 2/5 of all of the muffins.
Determine how many muffins did Elsa bake.
Solution:
I order to determine how many muffins did Elsa bake, we simply needed to divide 4 by 2/5 since it is stated that 2/5 of the muffins is 4. We must take note that in dividing a whole number with a fraction we must instead take the reciprocal of the fraction or the inverse of the fraction and then multiply it with the whole number. In our case, the reciprocal of 2/5 is 5/2. Hence, we must multiply 5/2 with 4.
= 4 / 2/5
= (4)(5/2)
= 20/2
= 10
Final answer:
Elsa baked 10 muffins in total.