Answer:
36 boys
Step-by-step explanation:
3
Please write the ratio as 3:5 or as --------
5
Note that 3 + 5 = 8, so that the fraction of boys in the club is 3/8 and that of girls is 5/8.
How many are in the club altogether? Let this count be represented by c. Then (5/8)c = 60.
Multiplying both sides of this equation by (8/5), to isolate c, we get:
c = (8/5)(60) = 96. Thus, there are 96 Science students altogether.
3/8 of this number are boys. This comes out to (3/8)(96) = 36 boys.
We could also solve this problem in the following manner:
3 b
------ = ------- , where b represents the number of boys.
5 60
Then 5b = 180. Dividing both sides by 5, we get b = 180/5 = 36 boys
Answer:
4/5 - 1/4
Step-by-step explanation:
4/5 =0.8
1/4=0.25
⇒0.8 - 0.25 = 0.55 (decimal form)
⇒4/5 - 1/4 = 11/20 (exact form-fraction)
Answer:
1,880 per pound
Step-by-step explanation:
<h3>
Answer: -0.81</h3>
Work Shown:
z = (x - mu)/sigma
z = (71 - 74)/(3.7)
z = -0.8108 approximately
z = -0.81