nestor fills a jar with marbles. each marble weighs 1/25 pound .the total weighs of all marbles is 3/5 pound how many marbles are in the jar

Total number of jars will be 15.          

Step-by-step explanation:

Given

The weight of each marble = 1/25 pound

The weight of all marbles = 3/5 pound

To determine

How many marbles are in the jar?

Let 'n' be the total number of jars

The total number of jars can be calculated by dividing the weight of all marbles by the weight of each marble.

Thus,

The total number of jars n = [weight of all marbles] / [weight of each marble]

                                           = [3/5] / [1/25]

                                           = [3 × 25] / [5 × 1]

                                           = 75 / 5

                                           = 15

Thus, total number of jars will be: n = 15                    

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: