b9ea3162f1f9498892cb3419679e719c.mp4 21.39 MB

I am unable to get the answer of this question This question belongs from LOD-1 (Percentages)Practice Question 1.Mr Mukesh wants to improve his vocabulary. He decides to learn from 2 sources. First, he learns from Norman Lewis Word Power Made Easy, and then he learns from GRE 555 word list. After learning from these two sources, the number of words he knows becomes thrice his original knowledge. On reading the GRE 555 word list, his knowledge increases twice at rate at which his knowledge increases by reading Norman Lewis Word Power Made Easy. By how much percent does his vocabulary knowledge increase when he reads Norman Lewis?a) 10%b) 20%3) 30%4) 40%5) 50%---------------------------------In the question it is specified that the rate is double (for GRE 555), but in the solution they have taken it as y% and 2y%.This may be a dumb question, but I would appreciate more descriptive solution please.

I am unable to get the answer of this question This question belongs from LOD-1 (Percentages)Practice Question 1.Mr Mukesh wants to improve his vocabulary. He decides to learn from 2 sources. First, he learns from Norman Lewis Word Power Made Easy, and then he learns from GRE 555 word list. After learning from these two sources, the number of words he knows becomes thrice his original knowledge. On reading the GRE 555 word list, his knowledge increases twice at rate at which his knowledge increases by reading Norman Lewis Word Power Made Easy. By how much percent does his vocabulary knowledge increase when he reads Norman Lewis?a) 10%b) 20%3) 30%4) 40%5) 50%---------------------------------In the question it is specified that the rate is double (for GRE 555), but in the solution they have taken it as y% and 2y%.This may be a dumb question, but I would appreciate more descriptive solution please.