tianzhu:

zeepo:

3) In a car park, there are thrice as many cars as vans. The number of cars is twice the number of motorcycles. The total number of wheels these vehicles have is 4598.

a) How many cars are parked at the car park?
b) If 1/3 of the motorcycles left the car park, how many vehicles are left in the car park?

Hi

Good Morning.

You may use the concept of “Grouping” or “Number*Value”.

Try to avoid working with decimals, therfore use 6u for cars.

Cars ----- 6u

Vans ----- 2u

Motorcycle ----- 3u

Consider number of wheels for a group of cars, vans and motorcycles.

(6*4) + (2*4) + (3*2) ------ 38

Number of groups ------ 121

Number of cars parked@carpark ----- 121*6 ----- 726

Number of motorcycles@carpark ------ 363

1/3 of motorcycles ------ 121

Number of vehicles@left at carpark ------- 726 + 242 + 242 -----1210

Best wishes

Thank you, tianzhu and Mathizzfun! Looks like I have lots to learn in order to help my daughter! Yuks!

tianzhu:

zeepo:

1) A fruiterer had the same number of apples, pears and lemons at first. After 98 lemons, some apples and pears were sold, there were 297 fruits left. There were twice as many apples as pears left. The number of lemons left was 13 fewer than the number of apples left. How many pears were sold?

Hi

Good Morning.

You may use MD or UP.

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8516/8586859425_93a9627338_z.jpg\">

Thank you, tianzhu! Would appreciate if you could help me with the others, I am totally lost! Especially the one about the jigsaw puzzle!

tianzhu:

superksmum:

Can someone pls help with this question:


Leslie bought some sweets and gave 2/3 of it to Alan. Alan bought some chocolates and gave 2/3 of it to Leslie. Leslie ate 6 chocolates and Alan ate 6 sweets. The ratio of Leslie's chocolates to sweets became 2:1 and the ratio of Alan's chocolates to sweets became 4:5. How many sweets did Leslie buy?

Thanks

Hi

This question is quite similar to a question from PSLE 2009.

You may use MD or UP.

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8505/8583584603_12d3e84785_z.jpg\">

Hi, I am new to this forum. Would appreciate if someone could help me with the followings:

1) A fruiterer had the same number of apples, pears and lemons at first. After 98 lemons, some apples and pears were sold, there were 297 fruits left. There were twice as many apples as pears left. The number of lemons left was 13 fewer than the number of apples left. How many pears were sold?

2) Anna and Ben take 9 days to complete a jigsaw puzzle. Ben and Celine take 3 days to complete the same jigsaw puzzle. When Celine partners with Dennis, they take 4 days to complete the jigsaw puzzle. How many days will Anna and Dennis take to complete 2 such jigsaw puzzles?

3) In a car park, there are thrice as many cars as vans. The number of cars is twice the number of motorcycles. The total number of wheels these vehicles have is 4598.

a) How many cars are parked at the car park?
b) If 1/3 of the motorcycles left the car park, how many vehicles are left in the car park?

4) On Teachers' Day, a florist sold thrice as many roses as orchids and collected $703 in total. She collected $437 more for the roses than the orchids. Given that a stalk of rose cost $1.50 more than a stalk of orchid, find the cost of a stalk of orchid.

Thanks.