Question

The mean mileage for the total number of vehicles estimated to its nearest ones place is kmpl.

• A. 6.5
• B. 7
• C. 8
• D. 6

Answer 1

The correct option is D 6

You know,
$Mean=\frac{Sumoftheobservations}{Numberoftheobservations}$

To find the number of observations, analyse the number line.


The number of vehicles having mileage of 8km/litre = 2

The number of vehicles having mileage of 5km/litre = 3.

∴ Sum of observations $=8+8+5+5+5$ = $31$

∴ Mean mileage of the cars
$=\frac{5+5+5+8+8}{5}$

$=\frac{31}{5}$

$=\frac{31\times 2}{5\times 2}$

$=\frac{62}{10}$ $=6.2$ kmpl.

Estimating 6.2 to the nearest ones, we get 6.

Therefore, the mean mileage of the cars shown in the picture estimated to the ones place is 6 km per litre.