Explain how to find the sum of 3/10 + 4/100

17/50

Step-by-step explanation:

First, to add fractions, we must find a common denominator, in this case, 100.

Then, we must make the fractions being added all have the common denominator.

So, we must multiply 3/10 * 10/10, which equals 30/100

30/100 + 4/100

Then, just add across the numerator to get 34/100, which can be simplified to 17/50

The answer is 17/50

Step-by-step explanation:

Step 1: Find the lowest common factor of 10 and 100

The LCM is 100

Step 2: Divide the LCM  100 by both denominators and multiply there product by there respective numerators.

3(10)/100 + 4/100

30/100 + 4/100

Step 3: Add the numerators together as the denominators are the same

(30 + 4)/100

34/100

Step 5: Divide both numerator and denominator by two

(34/100) ÷ 2

17/50

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you