Maths Challenging Sums (5)

1. There are 239 chickens and pigs in a farm.

    The total number of chickens and ducks in the farm is 767.

    There are 5 times as many ducks as pigs.

     If Mr Ong sells each duck for $8.90, how much can he collect from the sale of all his ducks?

2. Bun Talk prepares 100 more cakes than Three Leaves daily.  

    Each of them sells 300 cakes daily and the rest are donated to charity.

    After some days, Bun Talk has donated 3 816 cakes while Three Leaves has donated 2016 cakes.

           (a)      How many days does it take Bun Talk to donate 3 816 cakes?

           (b)      How many cakes does Three Leaves prepare daily?

3. Jeffery spent $1 720 on clothes and 3/8 of the remaining amount of his money on a laptop. After giving $1 260 to his parents, he had 1/2 of the amount of the money spent on the laptop left. Find the amount of money that he had at first.

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