Anyone very good in math???

Question

1. About 1 out of every 5 pounds of the body weight of an average adult is fat. What percent of body weight is fat??
2. Muscles make up about 40% of the body wieght of an average adult. about how many pounds do the muscles of a 160- pound adult weigh?
3. About 18% of the total body weight of an adult is bone. The rest is mostly water and other fluids. if an adult wieghs 150 pounds, about how many pounds are bone?

REAL ANWSERS ONLY PLZ THIS IS FOR MY MOM!

Answer 1

1) 1 divided by 5 equals .2, or 20%
2) 160 times .40 equals 64... 64 pounds of a 160 pound adult is muscle.
3) 150 times .18 equals 27, so 27 pounds of 150 pound person is bones.

Answer 2

1. 1 out of 5 is a ratio. Percent is also a ratio of a number to 100. So, set up a proportion 1/5 = x/100. Cross multiply and you get 5x = 100, therefore x = 20%.
2. To find the percent of a number, change the percent to a decimal and multiply. 40% = .40 x 160 = 64 pounds.
3. The same as 2. 18% = .18 x 150 = 27 pounds.

Answer 3

1. 1/5 = .20 to find percent .20 x 100 = 20%
2. 40%/100 = .4 then do .4 x 160 = 64 pounds
3. 18%/100 = .18 then do .18 x 150 = 27 pounds

Answer 4

1. 1/5 = 20%

2. .40 * 160 = 64 pounds

3. .18 * 150 = 27 pounds

Answer 5

1. 20% (1 divided by 5)
2. 64 lbs. (160 times .4)
5. 27 lbs. (150 times .18)



Simple percentages =)

Answer 6

1) 100/6 %, or 16.666666666666667%
2)160*0.4, or 40 pounds
3)150*0.18, or 27 pounds

Answer 7

Is this question a joke?

Is this really how far our educational system has gone downhill in the United States?

This is like a 4th grade math problem.
You really need to study harder.
But don't feel bad look at some of the answers you got.