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Mathematics 14 Online
OpenStudy (anonymous):

If the imports of a XYZ increased by 20% and exports decreased by 10% during a certain year then the ratio of imports to exports at the end of the year was how many times the ratio at the beginning of the year? A)12/11.... B)4/3...C)11/8.....D)3/2..E) 2

ganeshie8 (ganeshie8):

lets say both imports =100, and exports = 100 in the beginning of year

ganeshie8 (ganeshie8):

imports increased by 20% => 100(1+20%) exports decreased by 10% => 100(1-10%)

ganeshie8 (ganeshie8):

calculate them, and take ratio

ganeshie8 (ganeshie8):

ratio of imports to exports = \(\frac{100(1+20\%)}{100(1-10\%)}\)

ganeshie8 (ganeshie8):

simplify

OpenStudy (anonymous):

120/90

ganeshie8 (ganeshie8):

yes simplify further

OpenStudy (anonymous):

4/3

ganeshie8 (ganeshie8):

Yes !

OpenStudy (anonymous):

I got it @ganeshie8 thank you so much

ganeshie8 (ganeshie8):

np you're wlcme :)

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