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Varvara68 [4.7K]
3 years ago
15

Onyango is now three times as old as his daughter and four times as old as his son. Eight years from now, Onyango’s age will be

twelve years more than the sum of the ages of his son and daughter. Find their present ages.
Mathematics
1 answer:
pashok25 [27]3 years ago
6 0

Answer:

Brainliest please

50years is their ages now

Step-by-step explanation:

<h3>use algebra</h3>

onyango= 3a

daughter= let it be a

son= he is 4 times less than his father, 3/4a

8years

8+3a+a+8+3/4a+a

a+8+3/4a+a

7/4+1 = 8/4a+8 + 12y 20= 8/4a = 40years is the father 8 years later, so his present age is 40-8

32y= father now

daughter= 1/3×32=10years

son= 1/4×32= 8yrs

add 32+10+8= 50years

You might be interested in
Are these ratios equivalent?
Debora [2.8K]
<h3>Answer:  Yes</h3>

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

Explanation

The ratio 8:10 simplifies to 4:5 when you divide both parts by 2.

The ratio 16:20 simplifies to 4:5 when you divide both parts by 4

Therefore the two ratios 8:10 and 16:20 are both equal 4:5, so they are equal to one another.

------------

Put another way,

(8 large)/(10 small) = (16 large)/(20 small)

8/10 = 16/20

8*20 = 10*16 ... cross multiply

160 = 160

We get a true equation, so the first equation is true as well.

This shows the ratios are equivalent.

-------------

Or you could have...

(8 large)/(16 large) = (10 small)/(20 small)

8/16 = 10/20

8*20 = 16*10

160 = 160

We get the same conclusion as before.

3 0
3 years ago
The local skating rink pays Mary a fixed rate per pupil plus a base amount to work as a skating instructor. She earns $90 for
baherus [9]

Answer:The expressions for the payment made to Mary are,

        (Monday)      90 = 15m + b

        (Tuesday)     62 = 8m + b

where m and b are the fee per student and the base fee, respectively. Solving for m and b, the values are 4 and 30.

The equation that represents Mary's earning is

                                   y = 4x + 30

For 20 students,

                                   y = 4(20) + 30 = 110

For Lisa's earnings,

                                    y = 8x + 15

Substituting 20,

                                   y  =8(20) + 15 = 175

Thus, Lisa would earn more than Mary by $65.

Read more on Brainly.com - brainly.com/question/1560980#readmore

Step-by-step explanation:

5 0
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Answer:

Step-by-step explanation:

48 points

8 0
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2. Yahir was going up the stairs when he noticed that the first step was taller, so he measured
goblinko [34]

Answer:

6.5

Step-by-step explanation:

This answer makes sense because i subtracted the 8 inches from the total 60 then i used the number i got in the result (52)then i divided 52 by 8 wich are the rest of the steps. getting 6.5

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3 years ago
What is the distance between the points (–3, 4) and (–7, 4)?
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10 I hope this helps bye
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