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zloy xaker [14]
3 years ago
12

A teacher is four time as old as a student .in 20 years, the student 's age will be half of the teacher 's age. How old are they

now?
Mathematics
1 answer:
notka56 [123]3 years ago
5 0
Let the present age of student be x
Present of teacher will be 4x

After 20 years,
Age of student = x + 20
Age of teacher = 4x + 20

According to the given condition after 20 years,
x + 20 = (4x + 20)/2
x + 20 = 2x + 10
2x - x = 20 - 10
x = 10

So student's present age is 10 years while teacher's is 4 x 10 i.e 40 years.

Hope This Helps You!
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The sum of two numbers is 8, and their product is 15. What is the largest number?
AfilCa [17]
Hello there!

The sum of two numbers (x + y) is 8 (=8).
Their product (x * y) is 15 (=15).
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First, we know that the two number must be positive and under 8, as the product is positive.

Let's list out some numbers that are from 1 to 8 that sum up to 8;
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2 + 6
3 + 5
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Now, we need to multiply the two numbers that add up to 8, and see which makes a product of 15.
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4 * 4 = 16, this does not work.

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3 0
3 years ago
Twenty-five bakery customers were surveyed to determine if they like cake or pie. The results are shown in the Venn diagram. Cir
nikitadnepr [17]

Answer:

Probability = 2/7

Step-by-step explanation:

AS the Venn diagram is not given in the question, the question is incomplete. I've attached the Venn diagram of this question below for a better understanding of the question and its solution.

In the Venn diagram we can see that

Costumers who like Cake = 10

Costumers who like Pie = 8

Costumers who like both = 4

So it means that

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Total costumers who like Pie = 8 + 4 = 12

We have to find probabilty that a costumer who likes cakes also likes pie

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Probability = (No. of costumers who also like pie) / (Total costumers who like cake)

Probability = 4/14 = 2/7

5 0
3 years ago
Read 2 more answers
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Klio2033 [76]
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A(4)=-6+(3)(6)
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The tenth term
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Answer:

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Step-by-step explanation:

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