Hi therat! I know their aggregate score for express is 235 to 260. But what is the mean score for last year? Any way tks for your help.

Hi! May I know the mean score for year 2012? Tks for your info.

Many thanks to jieheng for your assistance.

Pls help.


Q1
There are 40 pupils in a class. 2/3 of the girls and 3/4 of the boys wear spectacles. How many girls are there if 4 more girls than boys wear spectacles?

Q2
There were 2/3 as many boys as girls at a birthday party at first. After 8 boys left the party, there were 20 more girls than boys remaining at the party. Find the number of boys at the party at first.

Q3
There were 1/3 as many boys as girls at a funfair. Half an hour later, another 8 boys joined the funfair and 6 girls left the funfair. In the end, there were 42 more girls than boys at the funfair. Find the number of boys at the funfair at first.

Thank you.

Thank you MathIzzzFun for your prompt and clear explanation!

Need help on the following question:


Q)
There were a total of 820 boys and girls at a funfair. After 3/4 of the boys and 3/5 of the girls left the funfair, there were 120 more girls than boys that remained. How many boys were at the funfair at first?

Thank you for your time.

There are thrice as many roast chickens as ducks in a stall. They are worth a total of $420. The total cost of the roast chickens is $60 more than the total cost of the roast ducks. If each roast duck cost $10 more than each roast chicken, what is the cost of each roast chicken?


Thank you.

Thank you tianzhu & speedmaths.com for your explanation.

1) Mike made 18 pizzas more than Sam daily. Everyday, each of them gave away 7 pizzas to charity and sold the rest of the pizzas to a canteen. After some days, Mike sold 768 pizzas to the canteen whereas Sam only sold 336 pizzas to the canteen.

a) How many days did Mike take to sell 768 pizzas to the canteen?
b) How many pizzas did Mike make daily?


2) Max and Ivan saved $828 altogether. 2/7 of Max’s saving was $120 more than 1/5 of Ivan’s savings. How much more money than Ivan did Max’s save?


3) Lyn baked 124 more chocolate muffins than banana muffins. After she gave away 25% of the chocolate muffins and 2/3 of the banana muffins, she was left with 138 more chocolate muffins than banana muffins. How many chocolate muffins did she bake at first?


Thank you.

MathIzzzFun:

bookwormkids:

Need help on the following questions.


1)
Log A and Log B are of different lengths. A carpenter wants to saw them into equal number of shorter pieces. The length of each piece from Log A need not be the same as that of each piece from Log B. If he saw Log A into 1.2m pieces and log B into 0.9m pieces, he has no leftover from log A but there will be 0.6m of log B left. If he saw Log A into 1.6m pieces and log B into 1.25m pieces, he has no leftover from log A but there will be 0.6m of log B left. Find the length of log A.


Thanks.

Original question discussed at pg 801


http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=69&t=280&p=844766#p844766


cheers.

Thank you MathIzzzFun and Tianzhu fpr your help.