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Is this app mock test are available free of cost?
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The average cost of 5 oranges and 4 guava is 36 naira. The average cost of 7 oranges and 8 guava is 48 naira. What is the total cost of 24 oranges and 24 guava?
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Its so easy create equations first, let oranges x and guava y. The answer is 336 naira
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how 336... when i solve it i got x=8 and y=-1 .... 24x+24y= 24*8 +*- 1 = 168
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The average cost of 5 oranges and 4 guavas is 36 naira:
5
x
+
4
y
2
=
36
2
5x+4y

=36
Multiplying both sides by 2:

5
x
+
4
y
=
72
(Equation 1)
5x+4y=72(Equation 1)
The average cost of 7 oranges and 8 guavas is 48 naira:
7
x
+
8
y
2
=
48
2
7x+8y

=48
Multiplying both sides by 2:

7
x
+
8
y
=
96
(Equation 2)
7x+8y=96(Equation 2)
Now, we solve these two equations to find
x
x and
y
y.

From Equation 1:

5
x
+
4
y
=
72
(Multiply this by 2)
5x+4y=72(Multiply this by 2)
10
x
+
8
y
=
144
(Equation 3)
10x+8y=144(Equation 3)
Subtract Equation 2 from Equation 3:

(
10
x
+
8
y
)

(
7
x
+
8
y
)
=
144

96
(10x+8y)−(7x+8y)=144−96
3
x
=
48
3x=48
x
=
16
x=16
Now, substitute
x
=
16
x=16 into Equation 1:

5
(
16
)
+
4
y
=
72
5(16)+4y=72
80
+
4
y
=
72
80+4y=72
4
y
=
72

80
4y=72−80
4
y
=

8
4y=−8
y
=

2
y=−2
So, the cost of one orange is 16 naira, and the cost of one guava is -2 naira (this negative value suggests that perhaps there’s a discount associated with guava, though this is unusual in a simple pricing problem).

Finally, the total cost of 24 oranges and 24 guavas:

Total cost
=
24
x
+
24
y
=
24
(
16
)
+
24
(

2
)
=
384

48
=
336
naira
.
Total cost=24x+24y=24(16)+24(−2)=384−48=336 naira.
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if you multiple both side by 2 then shouldn’t 2*(5x+4y)= 2*36 => 10x+8y=72 .... why multiple it by 2 again vin equation 3
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You need class 8 maths tuitions bro
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how do you calculate average cost?
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UPMANYU11
how 336... when i solve it i got x=8 and y=-1 .... 24x+24y= 24*8 +*- 1 = 168
Did you ask the author for the Answer options? Did you notice the term "average" cost of 5 oranges and 4 guavas is 36 nairas. And you have to find the total cost ......average cost & total cost are the same things?? Ask the author abt the 4 Answer options
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bhai average cost is given 36 is average.
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UPMANYU11
bhai average cost is given 36 is average.
Ask the person who posted the Q fr the 4 A options....it will be easier for you to understand the approach to the Q...just do this much
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Gbesimi
The average cost of 5 oranges and 4 guava is 36 naira. The average cost of 7 oranges and 8 guava is 48 naira. What is the total cost of 24 oranges and 24 guava?
hey can post the full question with answer if possible .
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Hi

Anyone online?

Any oxford R1 applicant here?

Nothing is appearing on my portal home page. Any idea why this is happening?
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Anyone online?
Can you please post your query at this link: mchat.php?room_id=50050098
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Hi All,

At MBA & Beyond, we are committed to maintaining a positive and constructive environment in all our interactions. We do not engage in defamatory or baseless discussions. Our track record and credibility stand on their own, and we take pride in serving our clients with the utmost transparency and integrity.

It is simply not in our practice to collect substantial fees without delivering the promised services. We give 100% effort and dedication to every applicant we work with, ensuring that they receive the full value of our offerings.

We prefer to focus our energy on providing value to those who trust us with their MBA journey rather than justifying ourselves to individuals who created accounts two days ago solely to cast doubt on our reputation.
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Ha anyone done the free trial for GMAT tutoring? I forget the name.
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UPMANYU11
how 336... when i solve it i got x=8 and y=-1 .... 24x+24y= 24*8 +*- 1 = 168
Since the guy didn’t share the A options....the correct way of solving this shd be 5 O & 4 G --> 9 fruits total cost (9 * 36) 324 ..similarly total cost of 7 O & 8 G --> (15 * 48) 720 summing up both it becomes 12 O & 12 G --> total cost -- 324 + 720 --> 1044....therefore total cost of 24 O & 24 G --> 1044 * 2 = 2088

So 1 of the options shd def. hv 2088

not sure if this is a GMAT type Q
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