What is 7/18 divided by 14/27, in simplified form?
A4/3
B2/3
C3/4
D3/2
Answer & Solution
Correct answer: C. 3/4
1. Find the reciprocal of 14/27, which is 27/14.
2. Multiply 7/18 by 27/14 instead of dividing.
3. Multiply the numerators: 7 x 27 = 189. Multiply the denominators: 18 x 14 = 252.
4. This gives 189/252.
5. Both 189 and 252 share a common factor of 63, so dividing both by 63 gives 3/4.
6. 4/3 comes from flipping the final simplified answer instead of the second fraction, and 2/3 and 3/2 come from arithmetic slips in the multiplication step.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 4 "Fractions", section 4.2 Multiply and Divide Fractions_
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