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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Reena has pens and pencils which together are 40 in
number. If she has five more pencils and five less pens, then the number
of pencils would become four times the number of pens. Find the
original number of pens and pencils. Answer in detail.

Solution : Number of Pens and Pencils = 40 Let the number of Pens = x and let Number of Pencils = y therefore , x + y = 40 => y = 40 - x ............................. (1) According to Question , y + 5 = 4 ( x - 5 ) y +5 = 4*x - 4*5 y + 5 = 4x - 20 y = 4x -20 -5 y = 4x - 25 ...................................(2) from 1 and 2 , we get 4x - 25 = 40 - x 4x = 40 - x + 25 4x + x = 40 + 25 5x = 65 x = 65/5 x = 13

Therefore Number of Pens = 13 Substitute the value of x in 1 , we get y = 40 - x y = 40 - 13 y = 27

If a= 16(238)15, b= 12(178)15 then x = 14(?)16...