Qualification > Math
IGCSE MATHS Doubts
astarmathsandphysics:
(15.9128-15.2978)/15.2978*100
(new-original)/original*100%
Fastal:
--- Quote from: haris94 on May 11, 2010, 02:55:26 pm ---17 (a) In 2007, a tourist changed 4000 Chinese Yuan into pounds (£) when the exchange rate was
£1 = 15.2978 Chinese Yuan.
Calculate the amount he received, giving your answer correct to 2 decimal places.
(b) In 2006, the exchange rate was £1 = 15.9128 Chinese Yuan.
Calculate the percentage decrease in the number of Chinese Yuan for each £1 from
2006 to 2007.
someone tell me how to do "b" part and please explain
Thanks
--- End quote ---
percentage decrease=old value-newvalue/oldvalue*100
so here
%=0.615/15.9128*100
thus % decrease=3.86%
Adzel:
--- Quote from: ~VIN1094~ on May 11, 2010, 02:28:54 pm ---
so by Pythagoras ..
OB = 52+52
= 21.2
--- End quote ---
And you wrote this >:(
Adzel:
--- Quote from: Fastal on May 11, 2010, 02:51:07 pm ---can you post the marking scheme, i cant find it
--- End quote ---
Here you go..see it by your self :-\
Malak:
Nov 05 P2
Q: 20 part b
thx
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