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8_murik_8 [283]
4 years ago
10

Andrei weighs 32 kg, which is 4/7 of the weight of his older sister and 2/5 of the weight of his father. The mother’s weight is

7/8 of the father’s weight. Can they all, together, go into an elevator that can hold 300 kg if they also have to take their 17 kg dog?
Mathematics
2 answers:
Leya [2.2K]4 years ago
4 0
Andrei 32kg
Older sister 56kg
Father 80kg
Mother 70kg
Dog 17kg
Total 255kg
Answer: Yes they can all go into the elevator together.
Nikolay [14]4 years ago
4 0

Answer:

Yes.

Step-by-step explanation:

Andrei weighs 32 kg.  This is 4/7 of his sister's weight; this means his sister weighs

7/4(32) = 56 kg.

32 kg is 2/5 of his father's weight; this means his father weighs

5/2(32) = 80 kg.

His mother weighs 7/8 of his father's weight; this means his mother weighs

7/8(80) = 70 kg.

Together they weigh

32+56+80+70 = 238.

With his dog, they weigh

238+17 = 255 kg.

This means they can all go into the elevator.

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Step-by-step explanation:

Hey there!

Here;

The equations are;

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Multiplying equation (i) by 2.

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<u>Check</u><u>:</u>

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(True).

<u>Therefore</u><u>, </u><u>the</u><u> </u><u>solution</u><u> </u><u>is</u><u> </u><u>;</u><u> </u><u>(</u><u>1</u><u>/</u><u>2</u><u>,</u><u>5</u><u>)</u><u>.</u>

<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

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