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Y_Kistochka [10]

3 years ago

10

Amy’s age plus Betty’s age is 29 years. Amy’s plus Carl’s age is 27 years. Betty’s plus Carl’s age is 22 years. What is the diff

erence between the oldest child and the youngest child is?

1 answer:

eduard3 years ago

4 0

Answer: 12

Step-by-step explanation

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What is 7 over 20 as a percentage

expeople1 [14]

7/20) * 100%
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The sum of 32 and what number is 105

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If the first number is increased by 7 and the second number is reduced by 6 times, the sum of these numbers is 29.

Marta_Voda [28]

Answer:

First number = 20

Second number = 12

Explanation:

Let the 1st number be x

Let the 2nd number be y

=====================

Condition 1

$\sf \rightarrow x + 7 + \dfrac{y}{6} = 29$

$\rightarrow \sf x=-\dfrac{y}{6}+22$

=====================

Condition 2

$\rightarrow \sf 2y - (x - 5) = 9$

$\rightarrow \sf x = 2y -4$

=====================

Substitute equations

$\rightarrow \sf -\dfrac{y}{6}+22 = 2y-4$

$\rightarrow \sf y=12$

=====================

Find value of 1st number

$\rightarrow \sf x = 2y - 4$

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$\rightarrow \sf x = 20$

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the cross of a water bin is shaped like a trapezoid. the base of the trapezoid are 22 feet and 4 feet long. it has a area of 26

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By selling a watch in Rs 150 and Rs 200 loss and profit are happened

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Answer:

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Step-by-step explanation:

Suppose the cost is x and at Rs150 the loss is 150-x (this should be a negative number).

At Rs200, the profit is 200-x.

So we have an equation: minus 150 minus x is equal to 200 minus x.

To solve the equation, the cost price X is Rs175.

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