PETA # 1 IN MATH

(Word Problems, Comics and Presentation)Presented To:

Mr. Juliano Parena Jr.

Presented By:Micco Allen Baybado; Alyssa Balisi

Roi Calimpon; Carm Altares

PROBLEM # 1A steel beam, 715 cm long, is cut into two pieces

so that one piece is 80 cm longer than the other.

Find the length of each piece .

SOLUTION # 1

SOLUTION # 1

ANSWER

N + 80 = 397.5 cm.

N = 317.5 cm.

PROBLEM # 2A solution that is 10% anti-freeze is mixed w/ a

20% anti-freeze to produce 50L of solution that is

15.6% anti-freeze. How many litres of the 10%

solution are used?

The total amount of solutions is 50 L

SOLUTION #2

The anti-freeze in the mixture comes from the anti-

freeze in each solution.

SOLUTION #2.1

Strength ofsolution

Litres of solution

= Litres ofAnti-Freeze

10% Solution

0.10 s = 0.10s

20% Solution

0.20 (50-s) = 10 – 0.20s

15.6% Mixture

0.156 50 = 7.8

SOLUTION # 2.2

0.10 s + (10 – 0.20s) = 7.8

-0.10s + 10 = 7.8 -0.10s = -2.2 -0.10 -0.10

s = 22 L

50-s = 28 L

Let’s Check it.

ANSWER

22L of the 10% Solution is used to make the mixture

PROBLEM # 3Emanuel Josh has P300 in his wallet. He wants to

ride on a roller coaster and to enter into the different

boots at the Star City. If the roller coaster cost P60,

what is the most he can spend on the different

boots?

SOLUTION #3

Solution:

60 + x < 300

60 – 60 + x < 300 – 60

x < 240

Answer: P240

ANSWER

To find the greatest amount of money Emanuel Josh

can spend on the different boots

Let x= the amount of money that he can spend on

the different bootsCost of Riding a Roller Coaster

Plus Cost of different booths

Less Than or Equal to

Total Amount

60 + X < 300