Mathematics, 28.06.2019 17:00 michaelmcgee99

Banu is 20 years older than binu. in 5 years, banu will be twice as old as binu. find their present age.

Answers: 2

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Answer from: alvaradovanessa14

i think Banu is 40 and Binu is 20

Step-by-step explanation:

if Banu was 35 and Binu was 15, 5 years go by Banu is 40 so still 20 years older and Binu is 20, Binu is half the age of Banu.

Answer from: tonio638

ANSWER:

Banu's present age = 45
Binu's present age = 25

Banu's present age is 45 years old while Binu's present age is 25 years old.

STEP-BY-STEP EXPLANATION:

We will be using simultaneous equations to solve this problem.

Let's first establish the two equations we will be using to solve this problem.

Let Banu's present age = x

Let Binu's present age = y

Equation No. 1 -

x = y + 20

Equation No. 2 -

x + 5 = 2y

To begin with, as ( x ) is already the subject in the first equation and it is already in its simplest form, we will substitute the value of ( x ) given from the first equation into the second equation to solve for ( y ) accordingly.

Equation No. 2 -

x + 5 = 2y

( y + 20 ) + 5 = 2y

y + 25 = 2y

y - 2y = - 25

- y = - 25

y = 25

From this, we will substitute the value of ( y ) from the second equation into the first equation to solve for ( x ) accordingly.

Equation No. 1 -

x = y + 20

x = ( 25 ) + 20

x = 45

Answer from: Quest

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Which statements correctly describe the graph of the function f(x)=x^3-2x^2-19x+20? check all that

Answer from: Quest

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒ $y=\frac{+1}{+1}x+0$

or $y=\frac{-1}{-1}x+0$

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

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Banu is 20 years older than binu. in 5 years, banu will be twice as old as binu. find their present...

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