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VLD [36.1K]
2 years ago
8

Susan is twice as old as lana. The sum of their ages 4 years ago was 37. Find how old they are now with solution need asap

Mathematics
1 answer:
goldfiish [28.3K]2 years ago
5 0

Answer:

Lana is 15 and Susan is 30

Step-by-step explanation:

let Lana's age=x

Susan's age=2x

Their ages four years ago:

Lana=x-4

Susan=2x-4

Now their ages 4years ago was 37 so:

x-4+2x-4=37

3x-8=37

3x=37+8

3x=45

x=15

Since Lana's age is x,she is 15years

Since Susan's age is 2x,she is 30years

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Your family goes to a restaurant for dinner. There are 7 people in your family. Some order the chiken dinner for $ 12 dollars an
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Answer:

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Step-by-step explanation:

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The price for the steak dinner = $ 17

Let The number of people who ordered chicken dinner = c

And The number of people who ordered steak dinner = s

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The total number of people went for the dinner = The number of people who ordered chicken dinner + The number of people who ordered steak dinner

Or, c + s = 7

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$ 12 × ( c + s ) = $ 12 × 7

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Or, ( 0 ) + ( $ 5 s ) = $ 25

∴ s = \frac{25}{5}

I.e s = 5

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or,  c = 7 - s

Or, c = 7 - 5

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Hence The number of people who ordered steak dinner is 5

And The number of people who ordered chicken dinner is 2   Answer

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3 years ago
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