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Directions:Solve the problems by applying the Polya’s 4-step method.


1. John is saving for a new comic book subscription, and he already has

Php300. Every week, he saves Php5 from his allowance. How much will

he be able to save in 3 weeks? 9 weeks? 21 weeks?


2. Vince’s parents bought a portion of residential lot for Php150,000. Every

year the original price of the lot in their community increases for 40%. How

much is the value of the lot if they want it to sell after 10 years?​


Sagot :

[tex]\red{\bold{Answer:}}[/tex]

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  1. 315, 345, 405
  2. 750,000

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Number 1

[tex]\green{\bold{Asked:}}[/tex]

The amount of money the he can save in 3 weeks, 9 weeks, 21 weeks.

[tex]\green{\bold{Given:}}[/tex]

Php300, Php5, 3 weeks, 9 weeks, 21 weeks

[tex]\green{\bold{Operations:}}[/tex]

Multiplication, Addition.

[tex]\green{\bold{Solution:}}[/tex]

First lets multiply 3 and 5.

[tex]5 \times 3 = 15[/tex]

Now add 300,

[tex]300 + 15 = 315[/tex]

John can save 15 money in 3 weeks, but altogether it is 315.

Now multiply 9 and 5.

[tex]9 \times 5 = 45[/tex]

Therefore,

[tex]300 + 45 = 345[/tex]

John can save 45 money in 9 weeks, but altogether it is 345.

Now we multiply 21 and 5.

[tex]21 \times 5 = 105[/tex]

Therefore,

[tex]300 + 105 = 405[/tex]

John can save 105 money in 21 weeks, but altogether it is 405.

[tex]\red{\bold{Final\:Answer:}}[/tex]

[tex]\green{\boxed{315,\:345,\:405}}[/tex]

Number 2.

[tex]\green{\bold{Asked:}}[/tex]

The Value of the lot if they want to sell it after 10 years.

[tex]\green{\bold{Given:}}[/tex]

Php150,000, 40%, 10 years.

[tex]\green{\bold{Operations:}}[/tex]

Multiplication, Division, Addition.

[tex]\green{\bold{Solution:}}[/tex]

[tex]\red{\bold{40\%\:in\:Decimal\:is\:0.40.}}[/tex]

Therfore,

[tex]150000 \times 0.40 = 60000[/tex]

[tex]\red{\bold{Confirmation:}}[/tex]

[tex]60000 \div 0.40 = 150000[/tex]

Now,

[tex]60000 \times 10 = 600000[/tex]

Finally add the quotient of 60,000 and 10 and the 150,000,

[tex]600000 + 150000 = 750000[/tex]

[tex]\red{\bold{Final\:Answer:}}[/tex]

[tex]\green{\boxed{750,000}}[/tex]

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