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2 years ago

Evaluate a + 4 when a =87

Mathematics

1 answer:

Rainbow [258]2 years ago

3 0

Answer:

Step-by-step explanation:

a+4

Let a = 87

87+4

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A cashier has a total of 30 bills consisting of ones, fives and twenties. the number of twenties is 5 less than the number of on

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Let us say that:

a = ones

b = fives

c = twenties

So that the total money is:

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=> a + 5b + 20c = 229 --> eqtn 1

We are also given that:

c = a – 5 --> eqtn 2

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Rewriting eqtn 3 in terms of b:

b = 30 – a – c

Plugging in eqtn 2 into this:

b = 30 – a – (a – 5)

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Plugging in eqtn 2 and 4 into eqtn 1:

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So,

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c = a – 5 = 9

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Evaluate a + 4 when a =87​

Evaluate a + 4 when a =87