Question

If it cost me $4.95 in fuel to travel 45 km,how much will it cost for me to travel 65km?

Answer 1

$7.15

Explanation:

Let $X be a cost of fuel for travel 65 km

and it is given that $4.95 is cost of fuel to travel 45 km

`(X)/(4.95) = (65)/(45)`

Multiply both side by 4.95 we get ,

`X = (65)/(45)`×
`4.95`

Multiply botth numerator and denominator in RHS by 100 to remove decimal in 4.95

X = 65/45 × 495/100

X = 65/100 × 495/45

X = 65/100 × 11 ........(495/45 = 11)

X = 0.65 × 11

X = 7.15

To travel 65 km the cost of fuel is $7.15