Sec 1 G2 4.1 - Translation of Statements into Alge Expressions

Mr Lim bought p eggs at q cents per dozen.  He sold them for r cents each.

(a)      Express the cost of each egg in terms of q.

Amelia gave 12 of her friends y sweets each.  She had w sweets left. 

Write an expression for the total number of sweets given to her friends.

Amelia gave 12 of her friends y sweets each.  She had w sweets left. 

Write an expression for the number of sweets Amelia had at first.

In year 2013 John is x years old.  His father is three times his age. 

Write down an expression in terms of x for his father’s age,

In year 2013 John is x years old.  His father is three times his age. 

Write down an expression in terms of x for John’s age in year 2020.

Sally bought q mangoes for $2.

How much is each mango? Express the cost of one mango in terms of q.

Sally bought q mangoes for $2. Sally gave r mangoes away. 

How many mangoes has she left?

Express the number of mangoes she has left in terms of q and r.

Sam had $250.  He bought some bags at $y dollars each. 

If he had $m dollars left, find in terms of m, the amount of money that he paid for the bags.

Sam had $250.  He bought some bags at $y dollars each. 

If he had $m dollars left, find in terms of m, the number of bags he bought.

John bought 30 cartons of eggs.  There were x eggs in each carton.

Write down an expression, in terms of x, for the number of eggs he bought.