Check your Understanding
Solve the following. Write your solutions on a separate sheet of paper.
1. A private organization distributed 5-kilo rice packs to a certain barangay placed under
special lockdown due to COVID 19. If the rice sells at P40 per kilogram, how much did the
organization spent if a total of 125 rice packs of rice was given?
2. An express delivery driver earns P500 daily for an eight-hour shift and an additional P35 for
every hour after that. Generate a function to solve his total earnings.
3. A computer shop charges P15 for the first hour and P10 for the succeeding hours. If Jacob
pays P45, how many hours did he rent the computer?
4. Ichan bought a car, he puts Php25 000 down payment and make monthly payment of Php12
000. If his car cost Php 457 000, how many years will it take him to pay it off?
5. Riza earns Php90 an hour in a toy factory with an additional of Php45 for her daily meal
allowance. On a Tuesday she earned a total of Php585, how many hours did she work for
that day?
1.
"125\\cdot5\\cdot40=P\\ 25000"
2.
daily earning:
"y=500+35x"
where x is hours of overtime
3.
"45=15+3\\cdot10"
Answer: "1+3=4" hours
4.
"25000+12\\cdot12000x=457000"
"x=\\frac{457000-25000}{144000}=3" years
5.
"90x+45=585"
"x=\\frac{585-45}{90}=6" hours
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