Foundation Mathematics Primary 6 Algebra

On Sports Day, four classes each won $y$ gold medals. Together with 9 silver medals from the relay teams, the school collected 25 medals in total. This gives the equation $4y + 9 = 25$. Solve for $y$.

A 4
B 16
C 8.5
D 9
Show Worked Solution

Worked Solution

Step 1: Subtract 9 from both sides to isolate the term with y.\n 4y + 9 - 9 = 25 - 9\n 4y = 16\n Step 2: Divide both sides by 4 to find y.\n 4y ÷ 4 = 16 ÷ 4\n y = 4 Answer: 4

Correct answer: 4

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