Madeline took 3 friends out for dinner. the cost of the meal was $46.50. she left a 20% tip. what was the total cost including the tip?

$55.8

Step-by-step explanation:

The total money was the whole meal($46.50) + 20% of the $46.50

The total money was

46.50 + 46.50 ×20/100

I wrote 20/100 because 20% means 20/100

46.50+ 46.50×20/100

The total cost for Madeline (sounds familiar to Adrenaline) was $55.8

linear pair postulates

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870