From when do NMAT mocks are available….

i took the crash course which had mocks pre included in it but it is showing not started

Already available at Mocks Section on Home Page @500/- for 5 mocks

13. In a class, each student likes least one of the five subjects name. ly Physics, Chemistry, Maths, English and Biotechnology. 80% of the stu- dents like Physics, 70% of the students like Chemistry, 90% of the students like Maths, 80% of the students like English and 90% like Biotechnology. What is the maximum percentage of the students who like exactly 4 of the 5 subjects? (A) 90% at (B) 70% (C) 62% (D) 50%

a+b+c+d+e=100 a+2b+3c+4d+5e=410 Solving , b+2c+3d+4e=310. If we let d=100, Eqn 3 becomes only 300 So got to push a few students from d to E 3d+4e=310 d+e=100 Thus e=10, d=90 Thus, ans=90%

nmat before or after cat, which is better?

before ....the level of difficulty is slightly lesser and clearing the cutoff lets u go into cat confidently ..

a mixture of 125 gallons of wine and water contains 20% water. how much water must be added to the mixture in order to increase the percentage of water to 25% of the new mixture? ( the answer is 8.33 and can anybody explain how to get the answer)

125 = 100 (wine🤤) + 25 (water) 125+X = 100 (wine) + {25+X} (water) [25+X / 125+X]=25/100, by solving X=8.33

Intial mixture = 125 gallons % of water in mixture = 20 Thus, quantiity of water = 25 gallons Let 'x' gallons of water be added to mixture so that new concerntration of water is 25%. -> (25+x)/(125+x)=25/100 ->100(25+x) = 25(125+x) Solving above eqn, we get x = 25/3 or 8.33. Thus 8.33 gallons water is required to increase concerntration of water from 20% to 25%.