$\frac{7}{5} + \frac{7}{4} - \frac{13}{20} =$

2.05

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1.25

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2.15

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2.5

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Solution

The correct option is D 2.5
Fractions are converted into respective decimals and then operated on (addition and subtraction).

$\frac{7}{5} = \frac{7 \times 20}{5 \times 20} = \frac{140}{100} = 1.4$

$\frac{7}{4} = \frac{7 \times 25}{4 \times 25} = \frac{175}{100} = 1.75$

$\frac{13}{20} = \frac{13 \times 5}{20 \times 5} = \frac{65}{100} = 0.65$

$\frac{7}{5} + \frac{7}{4} - \frac{13}{20} = 1.4 + 1.75 - 0.65$

Step 1: $1.4 + 1.75$

Step 2: $3.15 - 0.65$

$\Rightarrow 1.4 + 1.75 - 0.65 = 2.5$

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