Rate question – Sally and Amanda

Maths tip: Qn: If Sally works together with Amanda, they will take 10 days to produce an art piece. If the two girls first work together for 4 days, followed by Sally working alone for 10 days, Amanda will take 5 days to complete the remaining work. How long will each girl take to produce[…]

Maths question – water poured into two tanks

Maths tip: "Water was poured into an empty rectangular Tank J (Length 40cm,width 20cm ) until it reached a height of 25cm. There was 2.2 litres of water in Tank M (Length 20cm, width 20cm) . Water was then poured from Tank J to Tank M until the heights of the water in both tanks[…]

Maths question – Rate, candles burning

Maths tip: Here’s another similar question to the previous maths post. Let me know if there are any other methods to solve this! Q: Two candles of the same height are lit at the same time. The first candle takes 5h to burn completely. The second candle takes 4h to burn completely. If each candle[…]

Maths question – Rate, A and B

Maths tip: This is a challenging question that involves rates and ratios. It can be solved easily with algebra but there’s also a model method. Give a try, and let me know if there are any other methods! Q: A can paint the room in 9h. B takes 6h to paint a similar room. Given[…]

Multiple ways to solve this maths question

Maths tip: I came across this interesting question. So interesting that I had to find different ways to solve it. Have a go, let me know if you’ve discovered other ways! "Mr Lim left Town A for Town Bwhile Mr Tan left Town B for Town A. Both men left at the same time. Mr[…]

Solving rate questions

Maths tip: Some rate questions asks for combined rate. For these, first determine the rate, and then add them together. Example: "Lionel would take 8 days to build a wall. For the same wall, Nick would take 6 days. How many days would be needed to build the same wall if both of them worked[…]