SOLUTION: Aneku has 21 coins whose total value is Sh. 72, there are twice as many five shillings coins as there are 10 shilling coins. The rest are one shilling coins. Find the number of ten

Question 208972: Aneku has 21 coins whose total value is Sh. 72, there are twice as many five shillings coins as there are 10 shilling coins. The rest are one shilling coins. Find the number of ten shilling coins that Aneku has
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Aneku has 21 coins whose total value is Sh. 72, there are twice as many five shillings coins as there are 10 shilling coins. The rest are one shilling coins. Find the number of ten shilling coins that Aneku has
---------------------
Quantity Eq.: f + t + n = 21
Value Eq:::::5f +10t +n = 72
Quantity Eq.: f = 2t
---------------------------------
Rearrange:
f + t + n = 21
5f +10t +n = 72
f - 2t +0 = 0
----------------------
I used a matrix method to get:
# of 5 schilling = 6
# of 10 schilling= 3
# of 1 schilling = 12
==============================
Cheers,
Stan H.
Reply to stanbon@comcast.net
RELATED QUESTIONS
A coin box contains 50cents coin and $1 coins only. the total amount is $36. There are... (answered by CubeyThePenguin)

There are 21 coins in a jar consisting of quarters nickels and dimes. If there are twice... (answered by ikleyn)

Matthew has 50 coins consisting of nickels, dimes, and quarters in his coin box. The... (answered by josgarithmetic)

There is a bag containing nickels and dimes. There are twice as many dimes as there are... (answered by Maths68)

Alan has 14 coins.they are 5c,10c and 20c.the total value of the coins is $1.75.he has... (answered by josgarithmetic)

A coin collection of nickels, dimes and quarters has a value of $10. There are twice as... (answered by ewatrrr)

You have 37 coins that are nickels, dimes, and pennies. The total value of the coins is... (answered by greenestamps)

You have 37 coins that are nickels, dimes, and pennies. The total value of the coins is... (answered by josgarithmetic,ikleyn,Edwin McCravy,greenestamps)

61) In Anna's purse there are 11 coins consisting of nickels and dimes.If the total value (answered by stanbon,checkley71)