Answer:
Rita spend of hour more on her chemistry assignment.
Step-by-step explanation:
Fraction of an hour Rita spent on chemistry assignment =
Fraction of an hour Rita spent on math assignment =
∴ Fraction of hour Rita spent more on her chemistry assignment than math assignment
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To subtract fractions we take LCD for 4 and 8. Since 8 is the least common multiple for 4 and 8 so, we take LCD= 8
To make the denominators same we need to multiply numerator and denominator of second fraction with 2.
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After making the denominators common, we simply subtract numerators.
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Therefore, Rita spend of hour more on her chemistry assignment.