Question

find 7 1/2 % of 15 litres
$7 \times \frac{1}{2} \% \: of \: \: 15 \: \: liters$
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Answer 1

$7 \times \frac{1}{2} \times 15l \: \: \: \: \: \: \: \: \: \: \:( 1l = 1000ml )$

$7 \times \frac{1}{2} \times 15000$

$7 \times 1 \times 7500$

$52500$

Answer 2

$\LARGE{\underline{\underline{\pink{\sf{Required \: Answer:–}}}}}$

$\rightarrow 7\frac{1}{2} \% \times 15l$

$\rightarrow \frac{15}{2} \% \times 15l$

$\rightarrow \frac{15}{100} \times 15l$

$\rightarrow \frac{225}{100} l$

$\rightarrow 2.25l$

$\tiny{ \boxed{ \sf{ \color{pink}{hope \: it \: helps}}}}$