2 years ago

Michelle wants to buy a new laptop

Mathematics

2 answers:

andreyandreev [35.5K]2 years ago

6 0

Step-by-step explanation:

xenn [34]2 years ago

4 0

Answer:

28 weeks

Step-by-step explanation:

She starts with $500.

She adds $40 per week. In w weeks, she adds 40w.

After w weeks, she has 500 + 40w.

The total must equal $1620.

500 + 4w = 1620

Subtract 500 from both sides.

4w = 1120

Divide both sides by 40.

w = 1120/40 = 28

Answer: 28 weeks

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goblinko [34]

Answer:

52/3

Step-by-step explanation:

Use basic Thales therom,

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Cross multiply,

3*(5x-8)=4*(3x+7)

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Divide both sides by 3

x = 52/3

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