1 chinese yuan could buy $0.82 in 2010 and $0.66 in 2012
so in order to find how many US dollars could 1 chinese yuan can purchase we have to find multiplicative inverse of the value of 1 US dollar in chinese yuan.
first of all we will find value of U.S Dollars 2010
it is given that 1 U. S dollars can bought 1.22 chinese yuan
value of 1 chinese yuan = 1/ 1.22 = 0.82 U.S dollar
and hence 1 chinese yuan can purchase of $0.82 in 2010
secondly we will find value of U. S. Dollars 2012
it is given that 1 U. S dollars can bought 1.51 chinese yuan
value of 1 chinese yuan = 1/ 1.51 = 0.66 U.S dollar
and hence 1 chinese yuan can purchase of $0.66 in 2012
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