1. horsegal244

2. horsegal244

@pooja195

3. horsegal244

@Luigi0210

4. horsegal244

@phi

5. phi

you did part A in the other post.

6. horsegal244

120/25 = 4.8

7. phi

yes A, is 4.8 inches for part B, can you write the ratios? give it a try.

8. horsegal244

huh?

9. phi

can you re-read the other post, and try to do that for part B ?

10. horsegal244

I can't by myself its a completely different question...

11. phi

not completely different. first, from the first sentence in the problem you should get this: 2 inches is to 25 miles

12. horsegal244

$\frac{ 2 }{ 25 }$

13. phi

in part B, it asks about 1/4 of an inch is how many miles write 1/4 inch is to x

14. horsegal244

$\frac{ }{ 1/4 }$

15. phi

almost. but the first ratio you wrote was 2 inches / 25 miles notice we have inches up top and miles in the bottom when you write 1/4 inches is to x miles, we want inches up top and miles in the bottom

16. horsegal244

$\frac{ 1/4 }{ x }$

17. phi

yes. with ratios, we set them equal to each other $\frac{2}{25}= \frac{1/4}{x}$ the "x miles" is in the bottom (as it should be), but it would be nicer if it were up top we can do that *if we flip* both sides

18. phi

$\frac{25}{2} = \frac{x}{1/4}$

19. horsegal244

ok

20. horsegal244

now what

21. phi

it still looks a bit ugly, but we can "get rid of 1/4" by multiply top and bottom by 4

22. phi

in other words we do $\frac{x\cdot 4}{\frac{1}{4} \cdot 4}$

23. phi

1/4 * 4 in the bottom simplifies to 1

24. horsegal244

x/1

25. phi

I hope you mean 4x/1

26. horsegal244

yea

27. phi

$\frac{25}{2} = \frac{x}{1/4} \\ \frac{25}{2} =4x$ I would divide both sides by 4 (to get x by itself)

28. horsegal244

6.25 and .5

29. horsegal244

@phi

30. phi

25/2 is 12.5 so you have 12.5 = 4x or 4x= 12.5 then divide both sides by 4 4x/4 = 12.5/4 x= 12.5/4

31. horsegal244

ok so what would i put in the box

32. horsegal244

12.5/4?

33. phi

I think they want you to first simplify that

34. horsegal244

3.25

35. horsegal244

@phi

36. phi

close. is you calculator broken?

37. horsegal244

idk oh 3.125

38. phi

yes, that looks good.

39. horsegal244

ok that is what i put in the box?

40. phi

for part B

41. horsegal244

2 more?