P5/P6 Math: Percentage of Remaining

The question first presents a "percentage of a total" used.

Followed by another "percentage of remaining" used.

A value is given for the amount "left"

Such questions are similar to "fraction of remaining" and 

usually appear in Paper 2 of P5 or P6 exams.

Calculator usage is allowed.

Wendy has a a full tank of petrol in her car at first.

30% of the petrol was used when she drove from home to her aunt's place.

She used 20% of the remaining petrol to ferry her aunt to the city.

She has has 28 litres of fuel remaining in the car.

How much fuel did she have at first?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

Copy below question down before making attempt.

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P6 Math: Discount on an already discounted price

The following question type requires student to understand that when 2 separate discounts are given, they are not cumulative. 
(ie their numerical percentages cannot be simply added together.)

Such questions are common in P6 exams and can appear in both Paper 1 and 2.
But for the questions below, calculator usage is allowed.

Shayanne bought a watch from a store at Raffles Place.

There was a storewide discount of 20%.

Her credit card provided an additional 10% on the discounted price.

The original price of the watch at this store was $8000.

How much did Shayanne pay for the watch if she used her credit card?

(The total discount on the watch is definitely NOT 30%)

Luxurious Watches are also known as Timepieces

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

Copy below question down before making attempt.

Click if above box appears blank