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3 years ago

After spending $28 on a laser disc, the man finds that he just spent 4/7 of his money. How much did he have originally?

Mathematics

2 answers:

masha68 [24]3 years ago

6 0

Answer=49$
Because you have to devid 28 by 4 and then multiply that by7

Rainbow [258]3 years ago

4 0

X=amount of money at first.

we can suggest this equation:
4/7 x=28

x=(28*7)/4
x=196/4
x=49

Answer: he have originally $49.

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The overall algebraic expression will be: $\frac{5(x+11)}{3(x+8)}$

Definition of algebraic expression -

An expression obtained by a finite number of the fundamental operations of algebra upon symbols representing numbers.

Five times the sum of a number and eleven, divided by three times the sum of the number and eight.

Let the number be x.

Five times the sum of a number and eleven means 5 multiplied to the sum of x and 11. In expression this will be written as:

5(x + 11)

Three times the sum of the number and eight means 3 multiplied to the sum of x and 8. In expression this will be written as:

3(x + 8)

So, the overall algebraic expression will be: $\frac{5(x+11)}{3(x+8)}$

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It would be 3,8
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