**CHAPTER 4: ALGEBRAIC PROCESSES (1) SIMPLIFICATION AND SUBSTITUTION**

Below are the solution to all the questions in **Exercise 4a** of the **New General Mathematics for Senior Secondary School One (SS 1)**. If there are any question to ask, feel free to ask and a community member will be glad to assist you.

**Note:** Please this should only be used for educational purpose only and should not be seen as a replacement for the New General Mathematics textbook and or every other materials related to it.

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**Exercise 4a Questions and Solutions (Number 11 to 20)**

Click Here to view **Exercise 4a Questions and Solutions (Number 1 to 10)**

**Question 11:** Express a metres and bcm in cm

**Question 12:** The perimeter of a rectangle is 14m and the length is *x*m. Express the breadth of the rectangle in term of x.

**Question 13:** The perimeter of a rectangle is 20m and the lenght is xm. Find the area of the rectangle in terms of x. (WAEC)

**Question 14:** A rectangle has one side equalt to *(2x + 4)*cm and a perimeter of *(6x + 4)*cm. What is the area of the rectangle in terms of *x*? *(WAEC)*

**Question 15:** A car travels *d*km at an average speed of *u*km/h. How long does it take?

**Question 16:** A train moves at an average speed of xkm/h. How many hours will it take to cover 340km? (WAEC)

**Question 17:** A train travels for t hours at a speed of vkm/h. How far does it go?

**Question 18:** Two cars start together from the same place and travel in the same direction along a road. If the faster one has an average speed of ukm/h and the other vkm/h, how far ahead is the faster one after t hours? (WAEC)

**Question 19:** A boy’s age is x years and his father is four times as old. Find the father’s age in y years’ time.

**Question 20:** p years ago a man’s age was (q + r) times that of his son who was then r years old. How old is the man now? (WAEC)

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