A restaurant charges $85 for dinner. You tip 20%, how much will be the total cost of dinner including the tip?

$102

Step-by-step explanation:

$85 x .2 = $17

$85 + $17 = $102

Step-by-step explanation:

100% = $85

1% = 100%/100 = 85/100 = $0.85

20% = 1%×20 = 0.85×20 = $17

so, the total cost of $85 + $17 = $102

which we could have gotten directly by multiplying

$85 by 1.2 (1.2 = 1 for the whole + 0.2 for 20%) = $102

but I wanted to show you the detailed, basic line of thinking behind the % calculations first.

whenever you have no other idea, get to 1% first and then take it from there.

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

step-by-step explanation:

this is not a question