Instructions
Read the following bar diagram carefully to answer the questions given below.
Solution
Marks obtained by Amit in science = 74
Marks obtained by Amit in maths = 90
=> Required % decrease = $$\frac{90 - 74}{90} \times 100$$
= $$\frac{16}{9} \times 10 = 17.77 \%$$
$$\approx 18 \%$$
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