You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

[EX Q]: Question: In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is
Rs. 30 in all, how many 5 p coins are there?

 Option A: 150

 Option B: 130

 Option C: 120

 Option D: 110

 Option E: 140
[EX A]: Option A

[EX Q]: Question: A theater box office sold an average (arithmetic mean) of 65 tickets per staff member to a particular movie. Among the daytime staff, the average number sold per member was 75, and among the evening staff, the average number sold was 60. If there are no other employees, what was the ratio of the number of daytime staff members to the number of evening staff members?

 Option A: 1:2

 Option B: 1:4

 Option C: 5:11

 Option D: 1:3

 Option E: 13:15
[EX A]: Option A

[EX Q]: Question: A four digit number divisible by 7 becomes divisible by 3 when 19 is added to it. The largest such number is :

 Option A: 4461

 Option B: 4473

 Option C: 4479

 Option D: 4487

 Option E: 4491
[EX A]:
Option D