Activity C: Directions:
Write the algebraic expressions or equations from the following real-life
situations.
Example:
Rina is 12 years old. Mrs. Rodrigo is thrice the age of Rina decreased by 5.
x= 3(12) - 5
1. Miho weighed s kilograms. Express algebraically his weight after he gained
2.5 kilograms.
2. Express algebraically the number of feet in z inches (1 foot= 12 inches).
3. Jopay is y years old. Represent her age 10 years from now.
4. Markie is g centimeters tall. Marco's height is 4 less thrice the height of
Markie. How tall is Marco algebraically?
5. Erwin is twice as old as Edwin. If Edwin is 9 years old, Eleazar is 2 years
older than Erwin. Write an expression for the sum of Erwin and Edwin ages.
6. Write an algebraic equation for the cost of 21 liters of gasoline at x pesos per
liter is P2,092.00.
7. Nelia is y years old now. Write an algebraic equation for Nelia's age if her
age 5 years from now is 17.
8. Alvin bought 5 pencils and 7 notebooks. A notebook costs P10.80 more than
a pencil. Write an algebraic equation showing that the total amount of the
school supplies is P210.00.
9. Elma is twice as old as Azon. Ten years ago, she was four times as old as
Azon. Write the algebraic equation for their age ten years ago.
10. Jeremy's weight is 6 kilograrrs more than Phillip's weight. Lorenzo's weight
is 3 kilograms less than Jeremy's weight. Write an algebraic equation for the
weight of three boys having an average weight of 63 kilograms.​