maths Olympics Question

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maths Olympics Question

Postby donavonlees » Wed Mar 20, 2013 6:59 pm

Vincent had to paint a piece of paper . He painted 1/5 of the paper red and 51 cm2 of the paper blue. He then painted 1/3 of the remainder yellow and the rest green. If the green region is 1/4 of the area of the whole piece of the paper. Find the area of the paper. :( :dancing:

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Re: maths Olympics Question

Postby alfretztay » Thu Mar 21, 2013 9:11 am

donavonlees wrote:Vincent had to paint a piece of paper . He painted 1/5 of the paper red and 51 cm2 of the paper blue. He then painted 1/3 of the remainder yellow and the rest green. If the green region is 1/4 of the area of the whole piece of the paper. Find the area of the paper. :( :dancing:


Red (8u) + Blue (51 sq cm) + Yellow (5u) + Green (10u) -> 40u.
17u -> 51
1u -> 3
40u -> 120
Thus, my answer is 120 sq cm.

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Re: maths Olympics Question

Postby octoberbaby » Thu Mar 21, 2013 6:40 pm

Is it true in Math Olympics, if leave blank for those questions do not know how to do will get one point. Wrong answer zero point. Right answer two points.

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Re: maths Olympics Question

Postby alfretztay » Thu Mar 21, 2013 8:14 pm

octoberbaby wrote:Is it true in Math Olympics, if leave blank for those questions do not know how to do will get one point. Wrong answer zero point. Right answer two points.


For Asia Pacific Mathematical Olympiad for Primary Schools 2013 (APMOPS 2013) which is organised by Hwa Chong Institution, please see the link below :
http://www.hci.sg/aphelion/apmops/details.htm

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