Maths tip: For ratio problems where there are three groups of items with two ratios given – it is usually the case that you’ll need to express them into a common ratio. Here’s an example: "A fruit seller had some oranges, pears and mangoes. After selling some of them, there were 6 pears for every[…]
Maths tip: Michelle had four times as many stickers as Vanessa. After each of them bought an equal number of stickers from the bookshop, Michelle had thrice as many stickers as Vanessa. If Vanessa had 57 stickers in the end how many stickers did each of them buy from the bookshop?
Maths tip: The figure below consists of two semi circles with diameter 12cm and a sector of a circle with radius 12cm. Find the area of the shaded part, rounding your answer to the nearest whole number. Answer will come in the comment box.
Good question from one of our readers. Question: The shaded region is bounded by an equilateral triangle and 2 quarter arcs. Find the area of the shaded part, rounding off your answer to the nearest whole number. Answer’s way below
Maths tip: Maths questions can be pretty tricky too. Remember to check your work! Here is an example. Give it a go!
Maths tip Sometimes the question calls for solving it backwards. Keep an open mind and try to tackle the problem from multiple ways. Here’s an example: Cindy, Dick and Eddy had $410 altogether. Cindy gave 1/3 of her money to Eddy. Dick then gave 2/5 of his money to Cindy. As a result, Dick had[…]
Maths tip: Qn: Kenny and Joo Seng are selling durians at a fruit stall. If Kenny sells 60 durians per day and Joo Seng sells 15 durians per day, Kenny will have 24 durians left when Joo Seng has sold all his durians. If Joo Seng sells 60 durians per day and Kenny sells 15[…]
Maths Tip: The following looks like a simple question. But watch out for the very last step. A tricky one that may cause you some marks. QUESTION: A taxi driver charges $2.60 for the 1st km and 10