The ratio of price of a geometry box to that of a calculator is 3 : 4. The total price of both is 350. If the prices of geometry box and calculator are increased by 1/3 and 1/5 respectively of their original prices,
find the ratio of increased prices of the calculator to the price of geometry box .
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Answer:
3x+4x =350
7x = 350
x= 50
old price of geometry box = 3x = 150
old price of calculator = 4x = 200
new price of geometry box = 150+ 1/3× 150= 200
new price of calculator = 200+ 1/5× 200 = 240
ratio = 200/240 = 10:12 = 5:6
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