Can someone please answer this question please answer it correctly and please show work please help me I need it

64.80

Step-by-step explanation:

Sathish is alone for 150 at the beginning and 150 at the end for 300 km

2100 - 300 = 1800

He shares the trip with his 2 friends for 1800 km

We will use ratio to determine the gas need for this part of the trip

100 km       1800 km

=

6 liter          x liters

Using cross products

100x = 1800*6

100x =10800

Divide each side by 100

100x/100 = 10800/100

x = 108 liters

It costs 1.2 per liter

108*1.2 =129.6

But this is divided by 3  (Sathish and his 2 friends)

129.6/3 =43.2

Now we need to find how much for his solo part

100 km       300 km

=

6 liter          x liters

100x = 6*300

100x = 1800

Divide by 100

100x/100 =1800/100

x = 18

It costs 1.2 per liter

18*1.2 =21.6

Add his two costs together

43.20+21.60 =64.80

Your answer is 64.80

Step-by-step explanation:

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13