Question

During the academic session $2009-10$, in Banaras Hindu University, Varanasi, the number of students studying Arts. Law and Commerce was in the ratio of $5:6:7$. If during the academic session $2010-11$ the number of students studying Arts, Law and Commerce increased by $20$%, $30$% and $40$% respectively, what will be new ratio?

• A. $26:42:63$
• B. $36:44:73$
• C. $36:39:49$
• D. $30:39:49$

Answer 1

Answer: (D)

$30:39:49$

Ratio of student studying different stream $=5:6:7$
After increment of $20$%, $30$% and $40$% new ratio will be
$=\frac{120}{100}\times 5:\frac{130}{100}\times 6:\frac{140}{100}\times 7$
$=60:78:98$
$=30:39:49$.