Naron is learning for pre-second semester examination. He divides 8 hours per day for learning science, mathematics and literature with the ratio of 2 : 3 : 1. Find the number of hours he studies each major.

Answer 1

2+3+1=6 therefore science=(2/6)*8=2.67 and math=(3/6)*8=4 hours

Answer 2

let the times for the 3 subjects be 2x, 3x and x hrs each
2x+3x+x = 8
6x=8
x = 4/3

science : 2(4/3) = 8/3 hrs or 2 hrs and 40 minutes
Math : 3(4/3) = 4 hours
Lit : 4/3 hrs or 1 hour and 20 minutes

check: 2:40 + 4:00 + 1:20 = 6:00