Find the value:-
$2 x + 20 %$ of $x = 12.1$

5.9

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6.5

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0.5

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5.5

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Solution

The correct option is B $5.5$
$2 x + \frac{20}{100} x = 12.1 \Rightarrow \frac{220 x}{100} = 12.1 \Rightarrow x = \frac{12.1 \times 100}{220} = 5.5$

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5.4

In quadrilateral PQRS, PQ = 4 cm, QR = 3 cm, RS = 5.9 cm, QS = 4.8 cm and PR = 5.5 cm. Find the value of PS using constructions.

Class interval	$3.5 - 4.5$	$4.5 - 5.5$	$5.5 - 6.5$	$6.5 - 7.5$	$7.5 - 8.5$
Frequency	$9$	$14$	$22$	$11$	$17$

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