Step: 1

Let X be the money Victor have now.

Step: 2

X = money Victor had initially + money given by mother + money given by father

Step: 3

X = 20 + 15 + 22 = 57

Step: 4

So the money Victor have now , X = $57.

Correct Answer is : $57

Step: 1

Let x be the money left with him.

Step: 2

Money with Robert = $220

Step: 3

Money he donated to the charity = $55

Step: 4

Money left with him = Money with Robert - Money donated to charity

Step: 5

x = 220 - 55 = 165

[Substitute and subtract.]

Step: 6

Therefore, Robert is left with $165.

Correct Answer is : $165

Step: 1

Let x be the money Irena makes in 6 hours.

Step: 2

Money that Irena makes in one hour = $7

Step: 3

Money that Irena makes in 6 hours = Money that Irena makes in one hour × Money that Irena makes in 6 hours

Step: 4

x = 7 × 6

[Substitute.]

Step: 5

[Multiply.]

Step: 6

So, Irena makes $42 in 6 hours.

Correct Answer is : $42

Step: 1

Let x be the number of cards each friend gets.

Step: 2

Number of baseball cards = 18

Step: 3

Number of friends = 9

Step: 4

Each friend should get the same number of cards. Therefore we must divide the total number of cards by the total number of friends.

Step: 5

x = 18 ÷ 9 = 2

Step: 6

So each friend gets 2 cards.

Correct Answer is : 2

Step: 1

Let x be the number of crayons Lindsay will be left with.

Step: 2

Total number of crayons = 14.

Step: 3

Numbers of people sharing the crayons = 2.

Step: 4

Total Number of crayons Lindsay will be left with after sharing = T o t a l n u m b e r o f c r a y o n s N u m b e r o f p e o p l e s h a r i n g t h e c r a y o n s

Step: 5

[Divide]

Step: 6

Step: 7

So, Lindsay has 7 crayons now.

Correct Answer is : 14

Step: 1

Let x be the money he is left with.

Step: 2

Money left = money Jim has - (cost of one glue bottle × number of glue bottles he buys)

[Write an algebraic expression.]

Step: 3

x = $45 - (4 × 3)

[Substitute.]

Step: 4

[Multiply.]

Step: 5

[Subtract 12 from 45.]

Step: 6

So, Jim is left with $33.

Correct Answer is : $35

Step: 1

Let T be the temperature at night

Step: 2

Night temperature, T = Temperature in the morning + temperature gone up by afternoon - temperature fell at night

Step: 3

T = 45°F + 10°F - 4°F = 51°F

Step: 4

So, the night temperature was 51°F.

Correct Answer is : 51°F

Step: 1

Let x be the number of slices of bread he eats in a week's time.

Step: 2

Number of days in a week = 7

Step: 3

Number of slices of bread he eats per day = 2

Step: 4

Number of slices of bread he eats in a week's time = Number of slices of bread he eats per day × Number of days in a week

Step: 5

x = 2 × 7 = 14

[Substitute and multiply.]

Step: 6

So, Josh eats 14 slices of bread in a week.

Correct Answer is : 14

Step: 1

Let x be the money left with Andrew

Step: 2

Money left with Andrew = Money initially he had + money he made at the jumble sale - money he spent for buying a shirt

Step: 3

x = 56 + 16 - 17 = 55

[Substitute the values.]

Step: 4

So, the money left with Andrew is $55.

Correct Answer is : $55

Step: 1

Let n be the number of blue ballons

Step: 2

Number of balloons Sheela bought = 60

Step: 3

Number of yellow colored balloons = 15

Step: 4

Number of red colored balloons = 28

Step: 5

Number of blue balloons, n = Total number of balloons - number of yellow colored balloons - number of red colored balloons

Step: 6

n = 60 - 15 - 28 = 17

Step: 7

So, the number of blue colored balloons she bought, n = 17.

Correct Answer is : 17

Step: 1

Let x be the money Alvin has now.

Step: 2

Money Alvin has now = money initially he had - money he spent + money he earned

Step: 3

x = 700 - 165 + 240 = 775

Step: 4

So, the money Alvin has now is $775.

Correct Answer is : $775

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