self Maths Puzzle

The salaries of a,b,c are ib the ratio 2:3:5.If the increment of 15%, 10% and 20% are allowed respectively in their salaries, then what will be the new ratio of their salaries?

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self Other Question

the probability of a bomb hitting a bridge is 1/2 and twodirect hits are neede to destroy it.the least no of bombs required so that the probability of the bridge being destroyed is greater than 0.9 is? The owner of Gada Electronics, Jethalal sold total 108 mobiles of two companies last month. Samsung at 36% profit and Nokia at 9% profit. If he made total 17% profit on total sales of these mobile phones, how many Samsung phones did he sell?