Question

please answer the question below.

1. A truck uses 14 litres of diesel for 98 kilometre. how far will it run in 20 litres?

2. A train covers 600 km in 12 hours. How many hours will it take to cover 800 km?


my sister doubt. she is in class 5 . it the question of class 5...

guys help my sister​

Answer 1

Answer:

1. 140 km.

2. 16 hrs.

Explanation

1. diesel used to cover 98 km= 14 l

in 1 l the car will cover the distance = 98/14 km = 7 km

now in 20 km the car will cover the distance = 7 x 20 km = 140 km

2. to cover 600 m the tarin takes 12 hrs

so, in to cover 1 km the train will take= 12/600 hr= 0.02 hr

therefore, to cover 800 km the train will take = 800x 0.02 hrs = 16 hrs

Answer 2

$\huge{\mathtt{\red{A}\pink{n}\green{S}\blue{w}\purple{E}\orange{r}\gray{S}}}$

$\underline{\overline{\mid{\bold{\pink{Given:-}}\mid}}}$

A truck uses 14 litres of diesel for 98 kilometres.

$\underline{\overline{\mid{\bold{\blue{To\:find:-}}\mid}}}$

how far will it run in 20 litres?

$\underline{\overline{\mid{\bold{\purple{Solution:-}}\mid}}}$

$distance \: covered \: by \: the \: truck \: using \: \\ 14 \: litres \: of \: diesel \: = 98 \: kilometers \\ distance \: covered \: by \: the \: truck \: using \: \\ 1\: litre\: of \: diesel \: = \frac{98}{14} kilometers \\ distance \: covered \: by \: the \: truck \: using \: \\ 20\: litres \: of \: diesel \: = \frac{98}{14} \times 20\: kilometers \\ = \frac{98}{7} \times 10 \\ = 14 \times 10 \\ = 140 \: kilometers$

Therefore, truck will cover 140 km using 20 litres of diesel.

$\underline{\overline{\mid{\bold{\orange{Given:-}}\mid}}}$

A train covers 600 km in 12 hours.

$\underline{\overline{\mid{\bold{\green{To\:find:-}}\mid}}}$

How many hours will it take to cover 800 km?

$\underline{\overline{\mid{\bold{\gray{Solution:-}}\mid}}}$

$time \: taken \: by \: train \: to \: cover \: \\ 600 \: kilometers \: = 12 \: hours \: \\ time \: taken \: by \: train \: to \: cover \: \\ 1 \: kilometer \: = \frac{12}{600} \: hours \: \\ time \: taken \: by \: train \: to \: cover \: \\ 800 \: kilometers \: = \frac{12}{600} \times 800 \: hours \: \\ = \frac{12}{3} \times 4 \\ = 4 \times 4 \\ = 16 \: hours$

Therefore, train will take 16 hours to cover 800 km.

$\blue{\mid{\fbox{\tt{Hope it's helpful ♡♡}}\mid}}$