MATHEMATICS MIDDLE SCHOOL

There was 90 runners in the first half 2/5 dropped out I the second half 2/3 dropped out how many finished the race

Answers

Answer 1

Answer:

Answer:

18 Runners finished the race

Step-by-step explanation:

Given in question

Number of runners taken part in race = 90

Now in first half , $(2)/(5)$ drpped

i.e $90times((2)/(5) )$ = 36

so left runners in first half = 90- 36 = 54

again in second half 54 runners are there, but of them again $(2)/(3)$ dropped

So, $54 times((2)/(3) )$ = 36

Thus runner left in second half = 54 -36 = 18

Hence the number of runner finished the race = 18 Answer

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Solve this math problem

Find the annual simple interest rate. I=$17, P=$500, t=2 years

Answers

500 * i * 2 = 17
1000i = 17
i = 17/1000
i = 0.017

0.017 = 1.7%

answer: annual simple interest rate is 1.7%

r=I/Pt is the formula for simple interest rate, so plug in the number given to solve for r :)

Work:
r=17/(500*2)
r=17/1000
r=0.017

To change to a percentage, move the decimal point in 2 times.

Final Answer: 0.017 OR 1.7%

Carl Tinsley earns $1,970 per month. His family insurance plan costs $4,450 per year. His employer pays 66 percenof the cost. If this is his only deduction, how much is his
monthly paycheck after the medical insurance deduction
(rounded to the nearest dollar)? *

Answers

Answer:

$1,843.92

Step-by-step explanation:

4450/33%=1513

1513/12=126.083

1970-126.08=1843.92

sara buys a sweater at a department store the sweater costs $30 the store is having a 25% off sale on everything in the store. enter the amount od money in dollars sara saves from the sale do not consider the sales tax

Answers

Answer:

$7.50

Step-by-step explanation:

Sara buys a sweater that costs $30

The store is having a 25% off sale.

To figure out what 25% is you do 25/100, which will give you 0.25,

Multiply 0.25 by $30

You should get $7.50.

The answer is $22.50.

Hope this helps!

Homer Simpson weighs 400 pounds. He is on a diet to lose 5 pounds each week Barney weighs 322 pounds. he is on a diet to lose 3 pounds each week. How long will it take for them to weigh the same? write an equation and solve.

Answers

400 + (n-1) (-5) = 322 + (n-1) (-3)
-5n + 5 = 322
-3n + 3 | 405 - 5n
=325 - 3n
80=2n
n=40 n - 1 = 39

Answer = 39 , 39 weeks until they weigh the same

To find 45% of 72, multiply 45/100×72. Study the model: 45/100×72=3,240/100=32.4. Find 35% of 12.

Answers

You can also just multiply by the decimal equivalent.

12*.35=4.2

35% of 12 is 4.2

Hope this helps!

Answer:

4.2

Step-by-step explanation:

Find 35% of 12.

To find 35% of 12, you can use the method you demonstrated above by solve

35% = 35/100

of 12 = multiplication.

35/100 × 12

0.35 × 12

= 4.2

35 × 12/100

420/100

= 4.2

Hope this helps!

Thanks.

Whats the greatest common factor of 21,24,27

Answers

The Greatest Common Factor (GCF) is: 3

The greatest common factor of 21,24,27 is 3. Hope this helped!

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