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Oksanka [162]
2 years ago
12

Dion puts seven tenths of his allowance into savings each month what fraction of his saving doesnt go in

Mathematics
1 answer:
S_A_V [24]2 years ago
5 0

Answer:

\frac{3}{10} of his allowance doesn’t go into Dion’s savings.

Step-by-step explanation:

We know that \frac{7}{10} of Dion’s savings is going into his savings.

Since the denominator is “10” we know that \frac{10}{10} is the fraction that represents all of his allowance money.

So, we would subtract \frac{7}{10} from \frac{10}{10}.

\frac{10}{10} - \frac{7}{10} = \frac{3}{10}

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3 years ago
The perimeter of a rectangle is 72 cm. The length is 3 more than twice the width What
solmaris [256]
<h3><u>Solution</u></h3>

<u>Given </u><u>:</u><u>-</u>

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  • The length is 3 more than twice the width.

<u>F</u><u>i</u><u>n</u><u>d</u><u> </u><u>:</u><u>-</u>

  • Dimensions of rectangle
<h3 /><h3><u>Explantion</u></h3>

<u>Using </u><u>Formula</u>

\boxed{\underline{\tt{\red{\:(perimeter_{rectang}\:=\:2\times (Length+Width)}}}}

<u>Let,</u>

  • Length of Rectangle = x cm
  • Breadth of Rectangle = y cm

<u>According</u><u> to</u><u> question</u><u>,</u>

==> perimeter of Rectangle = 72

==> 2(x+y) = 72

==> x + y = 72/2

==> x + y = 36_________________(1)

<u>Again,</u>

==> x = 2y + 3

==> x - 2y = 3__________________(2)

<u>Subtract</u><u> </u><u>equ(</u><u>1</u><u>)</u><u> </u><u>&</u><u> </u><u>equ(</u><u>2</u><u>)</u>

==> y + 2y = 36 - 3

==> 3y = 33

==> y = 33/3

==> y = 11

<u>keep </u><u>in </u><u>equ(</u><u>1</u><u>)</u>

==> x - 2×11 = 3

==> x = 3 + 22

==> x = 25

<h3><u>Hence</u></h3>

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Step-by-step explanation:

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Step 5: Converting the fraction to mixed number:

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