answersLogoWhite

0


Best Answer

To answer a question like this,you need to think a little bit. The question is really "What combination of numbers of coins will add up to 70, and has a difference of 30 between the two numbers?" For example, lets say old Tanisha had 10 dimes and 60 quarters - 10 plus 60 indeed adds up to 70, for the number of coins we're looking for, but the difference between 10 and 60 is 50, not quite the 30 we are looking for. But we're on the right track. How about 20 and 50? Hmm... adds up to 70... and has a difference of 30. So ol' Tanisha has 50 quarters and 20 dimes. Not a bad stash.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar
More answers
User Avatar

lenpollock

Lvl 15
5mo ago

D = dimes

Q = quarters

D + Q = 70

Q = D + 30

Substitute

D + D + 30 = 70

2D = 70 - 30 = 40

D = 20

Hence Q = 20 + 30 = 50

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Tanisha has 70 coins all quarters and dimes there are 30 more quarters than dimes find the number of each type of coin?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Algebra
Related questions

If Tanisha has 70 coins all quarters and dimes there are 30 more quarters than dimes find the number of each type of coin?

70 - 30 = 40, 40/2 - 20, so there are 20 dimes and 50 quarters


If there were 520 dimes and quarters in vending machine and the ratio of dimes to quarters was 5 to 8 then how many dimes were there?

If 5 dimes to every 8 quarters that is 5 out of every 13 coins dimes and 8 of 13 coins quarters 5/13 x 520 = 200 dimes


Keoki has 22 coins that are all dimes and quarters. If their value is 4.35 how many dimes and quarters does Keoki have?

If Keoki has 14 quarters and 8 dimes (for a total of 22 coins), she has $3.50 and $0.80 or $4.30 in coins. If Keoki has 15 quarters and 7 dimes (for a total of 22 coins), she has $3.75 and $0.70 or $4.45 in coins. If Keoki has 22 coins that are all dimes and quarters and their value in total is $4.35 as asked, there isn't a combination of coins that will permit her to have both 22 coins and $4.35 worth of coins.


Mula has 27 coins that are all dimes and quarters the value is 4.35 how many dimes and quarters does mula have?

Mula has 16 dimes and 11 quarters.


A jar contains 18.50 in dimes and quarters There are 110 coins in the jar How many quarters are there?

where x=number of quarters, and 110-x=number of dimes (because the number of dimes is 110 minus the number of quarters): .25(x) + .10(110-x) = 18.50 .25x + 11 - .10x = 18.50 .25x - .10x = 7.50 .15x = 7.50 x = 50 50 quarters, 60 dimes


You have 1.55 in dimes and quarters. What are all the possible combinations of coins that you might have?

There are three possible combinations: 1 quarter and 13 dimes 3 quarters and 8 dimes 5 quarters and 3 dimes


A collection of dimes and quarters totals 72 coins Together the dimes and quarters are equal to 11.70 How many of each coin are in the collection?

30 quarters equals $7.50 42 dimes equals $4.20 That adds up to 72 coins with a value of $11.70


A man has twenty coins consisting of dimes and quarters if the dimes were quarters and quarters were dimes hw would have ninety cents more then he has now how many dimes and quarters does he have?

The man has 13 dimes and 7 quarters, which equate to $3.05 $1.30 + $1.75 If he had 13 quarters and 7 dimes he would have $3.95 $3.25 + 70c The method used to work this out was dividing 90c by the difference between the value of a dime and a quarter- i.e. 15c . 90 / 15 = 6, so of 20 coins, 6 more were dimes than quarters. Subtract 6 from 20, then halve the result = 7 the lower number is 7, the higher number is 7+6, = 13. Please also note that 'Quarters' is spelled with 2 'r's


A jar of dimes and quarters contained 10.95 there were 93 coins in the jar how many dimes were in the jar?

82 dimes


A bag contains 9 quarters 4 dimes and 12 nickels. What percent of the coins are dimes?

16 % of the coins are dimes. 4 of a total of 25.


What 5 coins can make 0.95?

The five coins are 3 quarters and 2 dimes.


Bob has 60 coins consisting of quarters and dimes The coins combined value is 9.45 How many are quarters and how many are dimes?

there are 23 quarters 37 dimes to do this use simultaneous equations to make this simpler i will assign variables to amount of quarters and dimes x-quarters y-dimes you know you have 60 coins, so amount of quarters plus dimes is 60 x+y=60 you also know the amount is equal to $9.45 since quarters are $0.25 and dimes are $0.10 another equation can be made 0.25x+0.10y=9.45 this equation shows what you do when you count your change now solve the first equation for a variable using algebra x=60-y you can then plug this new value into your second equation 0.25(60-y)+0.1y=9.45 you can now solve for y, which is the number of dimes y=37 now plug this number back into x=60-y to get the amount of quarters x=60-(37) x=23 23 quarters 37 dimes