SOLUTION: well if i have this kinda question what do i do SAlly has twice as many Dimes as Nickels.the total value is &3.50.how many nickels does she has?

Question 103450: well if i have this kinda question what do i do
SAlly has twice as many Dimes as Nickels.the total value is &3.50.how many nickels does she has?
Found 2 solutions by checkley75, scott8148:
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
.10*2X+.05*X=3.50
.2X+.05X=3.50
.25X=3.50
X=3.50/.25
X=14 NICKLES.
2*14=28 DIMES
PROOF
28*.10+14*.05=3.50
2.80+.70=3.50
3.50=3.50

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
let x=nickels, so 2x=dimes ... multiply the number of coins by their value to find the total (working in cents is easiest)

5(x)+10(2x)=350 ... 25x=350 ... x=14 ... 2x=28
RELATED QUESTIONS
i have 30 coins in my pocket, some dimes, twice as many nickels, and the rest quareters.... (answered by mananth)
Sally has twice as many times as nickels. The total value is $3.50. How many nickels does (answered by josmiceli)
Sally has twice as many dimes as quarters. The total value is $12.50. How many dimes does (answered by macston)
How do I solve the following question: "Trevor has $20 in nickels and dimes. He has... (answered by ewatrrr)
I really dont get how to do this. Here it is- Jacob has $3.50 in nickels and dimes. He... (answered by checkley71,mszlmb)
I have 59 coins that include pennies, nickels, dimes, and quarters. There are twice as... (answered by jorel555)
I have three times as many dimes as nickels. If the value of the coins is $7, how many... (answered by Alan3354)
I just need to know the formula for this question: A child saved $3.70 in nickels and... (answered by stanbon)
rachel has 20 nickels, dimes and quarters worth $3.70. if she has twice as many quarters... (answered by Kalmetam,checkley75)