Question

A man bought 20 litres of petrol. He used

$12 \times \frac{3}{4}$


litres of petrol in his car and
$3 \times \frac{2}{5}$


in his

motorbike. How much petrol was left with him?​

Answer 1

Step-by-step explanation:

$\blue{\mathfrak{\underline{\large{Given}}}:}Total \: petrol=20 \: litres \\ petrol \: used \: in \: car=12 \frac{3}{4} \: litres \\ = \frac{51}{4} \: litres \\ petrol \: used \: in \: motorbike = 3 \frac{2}{5} \: litres \\ = \frac{17}{5} \: litres \\ \blue{\mathfrak{\underline{\large{To \: find}}}:}amount \: petrol \: that \: left \: \\ after \: filling \: car \: and \: motorbike \\ \blue{\mathfrak{\underline{\large{Finding}}}:} \\ Amount \: petrol \: that \: left \: after \: filling \: car \: and \: motorbike \\ = Total \: petrol - petrol \: used \: in \: car - petrol \: used \: in \: motorbike \\ = 20 - \frac{51}{4} - \frac{17}{5} \\ = \frac{400 - 255 - 68}{20} \\ = \frac{77}{20} \: litres$

HOPE THIS HELPS YOU

MARK ME BRAINLIEST