Book Maths Puzzle

If a boy has a bag containing red, green and blue balls. The total number of balls in the bag is 60.There are 4 times as many red balls as green. 6 more blue balls than green.How many balls of each color a boy have?

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Book Other Question

Two water taps together fill a tank in 9 3/8 hours.the tap of larger diameter takes 10 hours less than the smaller one to fill the tank separately. find the time in which each tap can separately fill the tank. if f(x)=x.sq-3x+4 then find the values of x satisfying the eguation f(x)=f(2x+1)