Henry counted the money he saved for one month and found he has $8990 consisting of $100, $50 and $20 bills. He had half as many $50 bills as $20 bills but2 times as many as $100 bills as $50 bills.

How many bills of each kind did he have?

Question

Henry counted the money he saved for one month and found he has $8990 consisting of $100, $50 and $20 bills. He had half as many $50 bills as $20 bills but2 times as many as $100 bills as $50 bills. 

How many bills of each kind did he have?

kaylala · Answer

Please teach me how. Thanks

anonymous · Answer

let $20 bills are x
then can you tell
 how many bills of $50 he had?

kaylala · Answer

.5x = 50 bills
2(.5x)= 100 bills

Is that right?


Then how do you solve it?

kaylala · Answer

@03225186213   ^

anonymous · Answer

no he has half of as many $50 bills as $20 
so 
$ 50 bills are x/2
can you tell how many $100 bills he has?

kaylala · Answer

But isnt .5 = 1/2

Well okay then

100 bills =2(x/2)

anonymous · Answer

you are right i did not look  dot in it

kaylala · Answer

Okay

anonymous · Answer

now make equation with this information.

kaylala · Answer

How?

x+.5x+2(.5x) = ?

kaylala · Answer

@03225186213 ^

anonymous · Answer

no

20x+(.5x)(50)+100x=8990


now solve for x

kaylala · Answer

X=62

Then what @03225186213

anonymous · Answer

henry has 62 bills of $20
31 bills of $50 and 62 bills if $100