Algebraic Expressions II - JSS2 Mathematics Past Questions and Answers - page 2
11
Find the time taken for a car traveling at 𝑥 miles per hour to cover 100 miles.
Using the formula:
Time=Distance/Speed
Time=100/𝑥
12
A rectangle's width is 𝑤 and its length is 3𝑤+4. Find the perimeter.
The formula for the perimeter
𝑃 of a rectangle is:
𝑃=2(Length+Width)
Substitute the given values:
𝑃=2((3𝑤+4)+𝑤)
=2(3𝑤+4+𝑤)
=2(4𝑤+4)
=8𝑤+8