Please help,


1)\tNigel had some 20¢ coins and 50¢ coins. He spent ½ of his 20¢ coins and 75% of his 50¢ coins. The value of 20¢ coins left was the same as the value of 50¢ coins left. Given that the difference between the value of 20¢ coins and the value of 50¢ coins he had at first was $40, how much did Nigel have at first?

2)\tAli, Ben and Calvin collected stamps in the ratio 7:4:9. After Calvin gave 3/10 of his stamps to Ali and Ben, Ali had 60 more stamps than Calvin and Ben’s number of stamps increased by 35%.

(a)\tWhat was the ratio of Ali’s stamps to Ben’s stamps to Calvin’s stamps in the end?
(b)\tHow many stamps did Calvin have at first?

Dear Speedmaths


Many thanks for the alternative solution…

hi Speedmaths


Mrs lim is 40 yrs old Son is 2x while daughter x for 1st scenario. This one is clear.
Would you elaborate on the 2nd scenario when the daughter is 12 years old, how Is it that Mrs Lim is 52-x and the son 12+x

Thank you

Thank you, speedmaths!

Please help:


Mrs Lim 40 years old and her son is twice her daughter’s age.
Mrs Lim will be thrice her son’s age when her daughter is 12 years old. How old will Mrs Lim be when her 2 children’s combined age equals to her age?

Thank you.

Thank you, EasyAHomeTuition!!!

hi, pls help


If D gave E $64, D would have 3 times as much money as E. However if D gave $192 to E, he would have twice as much money as E. How much money did D have?

Thank you, sptamila & ezyKC!!!

please help… thanks.


2) Mrs Koh needed to bake a certain number of cookies for a charity drive. She has already baked 300 cookies. She planned to bake the rest within the next 5 days by baking the same number of cookies each day. If she completes baking 36% of all the cookies needed in the next 3 days, what was the total number of cookies that she needed to bake for the drive?

3) A fruit seller had to sell all his fruits within 2 weeks before they turned bad. He has already sold 420 fruits. He planned to sell the rest within the next 8 days by selling the same number of fruits each day. If he sold 45% of the fruits in the next 5 days, what was the total number of fruits that he has to sell?

4) An amphitheatre at a bird park has a seating capacity of either 84 adults or 112 children. If 39 adults and 35 children have already bought the admission tickets into the amphitheatre, how many more adults can enter the amphitheatre?

sptamila:

doraemo:

please help....


1)\t60 pupils are tasked to paint some chairs and tables. 20% of the boys and 60% of the girls painted the chairs. The rest of the 42 pupils painted the tables. How many boys painted the chairs?

Hi,

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Cheers
Sptamila

Hi sptamila
Shouldn’t the no of boys who painted chairs be 90/20 x2. How to arrive at the boys to be 10 ?