Management Aptitude Test 2015 Paper

(c) Given of marks scored by Rahul in English,
Mathematics and Science the ratio
    $\frac{1}{3}:\frac{1}{4}:\frac{1}{5}$
∵ LCM of 3, 4 and 5 = 60
∴ Marks scored by rahul in the ratio
= $\frac{1}{3}\times 60$ : $\frac{1}{4}\times 60$ : $\frac{1}{5}\times 60$
= 20 : 15 : 12
∵ Total score = 705   [given]
∴ Marks in Mathematics
= $\frac{15}{20+15+12}\times 705$
= $\frac{15}{47}\times 705$
= 15 x 15 = 225