Mathematics Middle School

Lily and Mackenzie collected some stamps. If Lily gave 4 stamps to Mackenzie, Mackenzie would have twice as many stamps as Lily. If Mackenzie gave 4 stamps to Lily, they would have the same number of stamps. How many stamps did each girl have?

GIVING BRAINLIEST. PLS HELP. SHOW UR WORK TOO

Answers

Answer 1

Answer: hope this helps ♡

Lily had 16 stamps and Mackenzie had 20 stamps.

Step-by-step explanation:

Lily gives 4 stamps to Mackenzie

(Mackenzie)     m + 4 = 2(L - 4)      (Lily)

Solve for Lily:

m + 4 = 2L - 8

m + 4 + 8 = 2L

(m + 12) ÷ 2 = 2L ÷ 2

(m + 12) ÷ 2 = L

L = (m + 12) ÷ 2 (we will substitute this value for L in the second equation)

Mackenzie gives 4 stamps to Lily

(Mackenzie)     m - 4 = L + 4      (Lily)

m - 4 = ((m + 12) ÷ 2) + 4

m × 2 - 4 = ((m + 12) ÷ 2 × 2) + 4

2m - 4 + 4 = (m + 12) + 4 + 4

2m - m = (m - m + 12) + 8

m = 12 + 8

m = 20 (we will substitute this value of m in the next equation)

L = (m + 12) ÷ 2

L = (20 + 12) ÷ 2

L = 32 ÷ 2

L = 16

Related Questions

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $5660 and his stock in Company B was worth $2500. The stock in Company A has increased 5% since last year and the stock in Company B has increased 9%. What was the total percentage increase in the investor's stock account? Round your answer to the nearest tenth (if necessary).

Answers

8,160.. but rounding would be 8170 sooo both increased by 5 and 9 percent would be 1270 and 1507 !

The total percentage increase in the investor's stock account will be 8.6%.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

The amount he earned from company A and company B is given as,

Earned = $5660 x 0.05 + $2500 x 0.09

Earned = $283 + $225

Earned = $508

Then the total percentage increase in the investor's stock account is given as,

P = [(508) / (5660 + 2500)] x 100

P = (508 / 5910) x 100

P = 0.086 x 100

P = 8.6%

The total percentage increase in the investor's stock account will be 8.6%.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

On Tuesday, Chris swam 6 laps in 5 1\10 minutes. On Wednesday, he swam the same distance in 4 7\10 minutes. How much faster did he swim on Wednesday?

and please show the answer. 10 extra points for work showed :)

Answers

Answer:

1  6/10 minute

Step-by-step explanation:

Simple subtraction, 5-4=1, 7-1=6, so therefore, Chris swam faster by 1 6/10 minutes.

Answer:

1  6/10 minute

Step-by-step explanation:

i dunno lol

there is a bag of 3 apples, 2 oranges, and 2 bananas. you select a fruit without looking and keep it. then you hand the bag to your friend to do the same. what is the probability that you both choose oranges. pls help me!

Answers

Answer:1/7 chance

Step-by-step explanation: 2/7 chance for each, the probability that both are pulled is cut in half, so 1/7

The base of a triangle is 9 units more than h, its height. Write an algebraic expression that represents its area in terms of h

Answers

Answer:

Step-by-step explanation:

cn n .mxn

help me as fast as possible

Answers

Answer:

2040

Step-by-step explanation:

break it into 2 models

(18x3)x20

and

15x(8x8)

(18x3)x20

54x20= 1080

15x(8x8)

15x64=960

add them together

1080+960=2040

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