22JUN21TUE
A cyclist covers 23 km in 3 hours. How much time will he take to cover 115 km? 23 : 3 :: 115 : x Product of extremes = Product of middles 23*x = 3*115 x = 3*115/23 x = 3*5*23/23 x = 3*5*1 x = 15 He will take 15 hours to cover 115 km.
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18JUN21FRI
RATIO IS EXPRESSED IN LOWEST TERMS. In a class there are 27 girls and 36 boys. What is the ratio of girls to boys? 27 : 36 9*3 : 9*4 3 : 4 The population of the US is 340 million and that of India is 1360 million. What is the ratio of the populations of the US and India? 340 : 1360 34 : 136 34*1 : 34*4 1 : 4
