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topjm [15]
3 years ago
13

The ratio of money in Obi's wallet to Rudy's wallet one day was 5:2.

Mathematics
1 answer:
mamaluj [8]3 years ago
4 0

Answer:

The amount that Obi initially had was £20

Step-by-step explanation:

Let

x ----> amount that Obi initially has

y ----> amount that Rudy has

we know that

\frac{x}{y} =\frac{5}{2}

x=2.5y ----> equation A

x-20=y-8

y=x-20+8

y=x-12 ----> equation B

Solve the system by substitution

substitute equation A in equation B

y=(2.5y)-12

solve for y

2.5y-y=12\\1.5y=12\\y=8

Find the value of x

x=2.5(8)=20

therefore

The amount that Obi initially had was £20

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zmey [24]

Answer:

I think it would be

Sums

1) a + -5

2) m + -n

Differences

1) 7 - -3

2) a - -5

Step-by-step explanation:

6 0
2 years ago
Questlon 9 of 10
slavikrds [6]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
The school is planning a school field trip to the zoo.There are 365 students and 10 adults.Each bus can hold 44 people.How many
LiRa [457]

Answer:

I believe it is 9

Step-by-step explanation:

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5 0
3 years ago
A new school has x day students and y boarding students.
guapka [62]

Given:

The fees for a day student are $600 a term.

The fees for a boarding student are $1200 a term.

The school needs at least $720000 a term.

To show:

That the given information can be written as x + 2y\geq 1200.​

Solution:

Let x be the number of day students and y be the number of boarding students.

The fees for a day student are \$600 a term.

So, the fees for x day students are \$600x a term.

The fees for a boarding student are \$1200 a term.

The fees for y boarding student are \$1200y a term.

Total fees for x day students and y boarding student is:

\text{Total fees}=600x+1200y

The school needs at least $720000 a term. It means, total fees must be greater than or equal to $720000.

600x+1200y\geq 720000

600(x+2y)\geq 720000

Divide both sides by 600.

\dfrac{600(x+2y)}{600}\geq \dfrac{720000}{600}

x+2y\geq 1200

Hence proved.

3 0
3 years ago
Which number is less than 0.37? A. 0.72 B. 0.5 C. 0.35 D. 0.41
ivolga24 [154]

Answer:

0.35 is less than 0.37 because 35 < 37.

8 0
3 years ago
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