Which is greater
15) 2/5 or 3/10
16) 1/5 or 1/4
17) 3/4 or 18/24

15) 2/5

16) 1/4

17) Same

Step-by-step explanation:

15) Multiply 2/5 by 2 on both the numerator and denominator which is 4/10 now you can clearly tell that 2/5 is greater.

16) Multiply 1/5 by 4 on both the numerator and denominator and multiply 5 on both the numerator and denominator in 1/4 for 1/4 you will get 5/20 and for 1/5 you will get 4/20 and you can tell that 5/20 is greater which is 1/4.

17) Multiply 3/4 by 6 on both the numerator and denominator you will get 18/24 so 18/24 and 3/4 are equivalent.