Question

a bicycle goes 85 km in 1lit petrol.to cover 425 km how much petrol does it need​

Answer 1

We have been told that ; 85 km is possible with 1 litre or 1000 ml petrol . We have been asked that how much petrol is necessary for 425 km ?

Actually , the type of variation is Direct . If we travel more distance ; more petrol is necessary . If we take distance as x And petrol as Y ; if x increase y will increase and if x decrease y will decrease .

Now , we need to solve as :

• 85km = 1000 ml
• 425km = ?

Cross multiply :

➜1000×425/85 (425 divided by 85 = 5)

➜ 1000 × 5

➜ 5000 ml

5000 ml or 5 litres of petrol is necessary for 425 km .

Verification :

85×5000

________ ➜ 1

425 × 1000

85 × 5

______ ➜ 1

425

1 = 1

LHS = RHS

Answer 2

$\large{\boxed{\underline{\sf{Question \: is \: given}}}}$

A bicycle goes 85 km in 1 litre petrol. How much petrol does it need to cover 425 km.

$\large{\boxed{\underline{\sf{Answer}}}}$

$\large{\boxed{\underbrace{\sf{Given \: that}}}}$

✠ A bicycle goes 85 km in 1 litre petrol.

$\large{\boxed{\underbrace{\sf{To \: find}}}}$

✠ A bicycle goes 425 km in how much litre petrol.

$\large{\boxed{\underbrace{\sf{Solution}}}}$

✠ A bicycle goes 425 km in 5 litre or 5000 millilitres of petrol.

$\large{\boxed{\underbrace{\sf{Understanding \: the \: question}}}}$

✠ This question says that a bicycle covered 85 kilometres with 1 litre of petrol. We know that 1 litre is always equal to 1000 millilitres. Afterwards this question says that how much petrol needed by the bicycle to cover 425 km means it ask us to find the litre or millilitres of petrol to cover 425 kilometres.

To solve this question firstly we have to cleared all our concepts and we have already cleared that this concept is related to direct and indirect inversions or propositions. And this question is in direct form. That's why we already take the assumptions and now we have to use it here because it's already known to us that if the distance is increased then the petrol is also increased frankly saying that when there is a need of more petrol then the distance is increased by itself. But if the distance is decreased then the petrol is also decreased frankly saying that when there is a need of less petrol then the distance is also being less by itself. Let's see the procedure now !

$\large{\boxed{\underbrace{\sf{Procedure \: of \: the \: question}}}}$

✠ To solve this question we have to cross multiply the digits properly afterthat dividing and multiplying we get our final result that is 5 l or 5000 ml.

$\large{\boxed{\underbrace{\sf{Full \: solution}}}}$

✠ As we know that what is given or what to find but let's see it again to understand the concept clearly again.

➝ 85 kms = 1 l / 1000 ml (Given)

➝ 425 kms = (To find)

Hence, it's cleared what is given or what to find nd we already know that what to do know we have to cross multiply the digits now like this -

➨1000 × 425/85

➨ 1000 × 5

➨ 5000

Henceforth, 5000 ml is our answers means 5000 ml = 5 l because (1l = 1000 ml) and (5l = 1000×5) means (5000ml)