Sasi Math (Revised for 1024)

Scroll:Percentage >> Percentage >> saq (2889)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.

A calculator costs 20% less in the school bookshop than in the estate bookstore. Given that the price difference is 320 cents, calculate the cost of the calculator in the school bookshop. (Place your answer in dollars.)

$ ___

Answer:_______________

Mr Lim was informed that he would be receiving a 30% cut in his salary due to the recession. Given that the deduction amounts to $690, how much was his old salary

$ ___

Answer:_______________

Mr Lim was informed that he would be receiving a 25% cut in his salary due to the recession. Given that the deduction amount to $625, how much was his old salary

$ ___

Answer:_______________

A calculator cost 15% less in the school bookshop than in the school bookstore. Given that the price difference is 870 cents, calculate the cost of the calculator in the school bookshop. (Place your answer in dollars.)

$ ___

Answer:_______________

A calculator costs 20% less in the school bookshop than in the estate bookstore. Given that the price difference is 640 cents, calculate the cost of the calculator in the school bookshop. (Place your answer in dollars.)

$ ___

Answer:_______________

Mr Lim was informed that he would be receiving a 30% cut in his salary due to the recession. Given that the deduction amounts to $360, how much was his old salary

$ ___

Answer:_______________

Mr Lim was informed that he would be receiving a 25% cut in his salary due to the recession. Given that the deduction amount to $500, how much was his old salary

$ ___

Answer:_______________

A calculator cost 15% less in the school bookshop than in the school bookstore. Given that the price difference is 735 cents, calculate the cost of the calculator in the school bookshop. (Place your answer in dollars.)

$ ___

Answer:_______________

A calculator costs 20% less in the school bookshop than in the estate bookstore. Given that the price difference is 660 cents, calculate the cost of the calculator in the school bookshop. (Place your answer in dollars.)

$ ___

Answer:_______________

10)

Mr Lim was informed that he would be receiving a 30% cut in his salary due to the recession. Given that the deduction amounts to $480, how much was his old salary

$ ___

Answer:_______________

Answer: $12.80

SOLUTION 1 :

Step 1:	20%	→ 320¢	(difference)
	1%	→ $\frac{320¢}{20%}$
Step 2:	80%	→ $\frac{320¢}{20%}$ x $\frac{80%}{1}$	(pricing of calculator from school bookshop)
		= 1280¢
		$\frac{1280¢}{100}$	(change to $)
		= $12.80

Mr Lim was informed that he would be receiving a 30% cut in his salary due to the recession. Given that the deduction amounts to $690, how much was his old salary

Answer: $2300

SOLUTION 1 :

Step 1:	30%	→ $690	(deducted amount)
	1%	→ $\frac{$690}{30%}$
Step 2:	100%	→ $\frac{$690}{70%}$ x $\frac{100%}{1}$	(old salary)
		= $2300

Mr Lim was informed that he would be receiving a 25% cut in his salary due to the recession. Given that the deduction amount to $625, how much was his old salary

Answer: $2500

SOLUTION 1 :

Step 1:	25%	→ $625	(deducted amount)
	1%	→ $\frac{$625}{25%}$
Step 2:	100%	→ $\frac{$625}{25%}$ x $\frac{100%}{1}$	(old salary)
		= $2500

Answer: $49.30

SOLUTION 1 :

Step 1:	15%	→ 870¢	(difference)
	1%	→ $\frac{870¢}{15%}$
Step 2:	85%	→ $\frac{870¢}{15%}$ x $\frac{85%}{1}$	(pricing of calculator from school bookshop)
		= 4930¢
		$\frac{4930¢}{100}$	(change to $)
		= $49.30

Answer: $25.60

SOLUTION 1 :

Step 1:	20%	→ 640¢	(difference)
	1%	→ $\frac{640¢}{20%}$
Step 2:	80%	→ $\frac{640¢}{20%}$ x $\frac{80%}{1}$	(pricing of calculator from school bookshop)
		= 2560¢
		$\frac{2560¢}{100}$	(change to $)
		= $25.60

Mr Lim was informed that he would be receiving a 30% cut in his salary due to the recession. Given that the deduction amounts to $360, how much was his old salary

Answer: $1200

SOLUTION 1 :

Step 1:	30%	→ $360	(deducted amount)
	1%	→ $\frac{$360}{30%}$
Step 2:	100%	→ $\frac{$360}{70%}$ x $\frac{100%}{1}$	(old salary)
		= $1200

Mr Lim was informed that he would be receiving a 25% cut in his salary due to the recession. Given that the deduction amount to $500, how much was his old salary

Answer: $2000

SOLUTION 1 :

Step 1:	25%	→ $500	(deducted amount)
	1%	→ $\frac{$500}{25%}$
Step 2:	100%	→ $\frac{$500}{25%}$ x $\frac{100%}{1}$	(old salary)
		= $2000

Answer: $41.65

SOLUTION 1 :

Step 1:	15%	→ 735¢	(difference)
	1%	→ $\frac{735¢}{15%}$
Step 2:	85%	→ $\frac{735¢}{15%}$ x $\frac{85%}{1}$	(pricing of calculator from school bookshop)
		= 4165¢
		$\frac{4165¢}{100}$	(change to $)
		= $41.65

Answer: $26.40

SOLUTION 1 :

Step 1:	20%	→ 660¢	(difference)
	1%	→ $\frac{660¢}{20%}$
Step 2:	80%	→ $\frac{660¢}{20%}$ x $\frac{80%}{1}$	(pricing of calculator from school bookshop)
		= 2640¢
		$\frac{2640¢}{100}$	(change to $)
		= $26.40

10)

Mr Lim was informed that he would be receiving a 30% cut in his salary due to the recession. Given that the deduction amounts to $480, how much was his old salary

Answer: $1600

SOLUTION 1 :

Step 1:	30%	→ $480	(deducted amount)
	1%	→ $\frac{$480}{30%}$
Step 2:	100%	→ $\frac{$480}{70%}$ x $\frac{100%}{1}$	(old salary)
		= $1600