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2 years ago

A wallet containing $40 has three times as many $1 notes as $5 notes.

Mathematics

2 answers:

Keith_Richards [23]2 years ago

8 0

Answer:

30 £1 notes

and

10 £5 notes

Step-by-step explanation:

There is 3 times as many 1s than 5s.

If 5s is represented as x, and there are 3 times as many 1s than 5s, we can call the 1s 3x.

Now we put this in a ratio of 3x : x

By dividing both sides by x, the ratio becomes 3 : 1

3 add 1 is 4, so there are 4 parts in the ratio.

40 divided by 4 is 10, so each part of the ratio is worth 10

The ration is now 3 x 10 : 1 x 10

30 : 10

Therefore, there are:

30 £1 notes

and

10 £5 notes

abruzzese [7]2 years ago

5 0

Ye $5 notes be x and $1 notes be y
Equation = 5x+y = $40

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