Sunny gets $$\frac{7}{9}$$ times as many marks in QA as in ENGLISH. If his total combined marks in both the papers is 90. His marks in QA is:
a) 50
b) 60
c) 70
d) 80
Answer: c
Explanation:
$$\eqalign{
& {\text{Total}}\,{\text{Marks}} = 90 \cr
& {\text{Marks}}\,{\text{in}}\,{\text{QA}} = \frac{7}{9}\,\text{of}\,\,90 \cr
& = \frac{{\left( {7 \times 90} \right)}}{9} \cr
& = 7 \times 10 \cr
& = 70 \cr} $$
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