In a jar of coins, the ratio of nickels to dimes is 2:7. If the jar contains 350 nickels, how many dimes are there?
A) 175
B) 350
C) 700
D) 1225

Question

In a jar of coins, the ratio of nickels to dimes is 2:7. If the jar contains 350 nickels, how many dimes are there?
A)	175	
B)	350	
C)	700	
D)	1225

rishavraj · Answer

say no of nickles = 2x and tht of dimes = 7x
so 2x = 350
get x and the no of dimes

rishavraj · Answer

so like 2x = 350
divide by 2 on both sides so
x = 175 ...
and no of dimes = 7*x = 7*175 = ???

mathmale · Answer

Ratios:
                              nickels            2
nickels to dimes:  ---------- = --- =  
                                dimes             7

That means the very smallest number of nickels you could have would be 2 and the very smallest number of dimes 7.   Add 2 to 7.  Result:  Fraction of the 350 total coins that are nickels is 2/9; fraction that are dimes is 7/9.

Multiply 350 by 2/9.  # of nickels is ... ?