Directions: In a query answering module, students ask their queries where each query is based on one of the four sections DI, LR, QA, VA. The queries enter the module as soon as they are asked and remain there until they are answered. All queries that are received in the first half of the day are co

Directions: In a query answering module, students ask their queries where each query is based on one of the four sections DI, LR, QA, VA. The queries enter the module as soon as they are asked and remain there until they are answered. All queries that are received in the first half of the day are counted as a part of that day and the ones received in the second half are counted as a part the queries. Queries are answered only in the second half of the day.

The following table gives the number of unanswered queries of the previous week in each section by the end of the week.

Number of unanswered queries	DI	LR	QA	VA
End of last week	24	17	48	14

 

Information regarding the number of new queries received daily in the current week is given in the table below:

	DI	LR	QA	VA
Monday	10	2	5	2
Tuesday	12	5	2	3
Wednesday	8	2	5	0
Thursday	4	2	8	5
Friday	2	4	3	6
Saturday	4	5	1	7

 

● Tiru answers queries based on QA section only. Sam answers queries on VA section only.

● Anu answers queries based on DI section only. Dudi answers queries on LR section only.

● In the current week, if the number of queries answered by Dudi, Anu, Sam and Tiru on any day (from Monday to Saturday) are denoted by d, a, s and t respectively, then it was observed that

6 ≤ d ≤ 12

8 ≤ a ≤ 18

5 ≤ s ≤ 10

2 ≤ t ≤ 15

If at the end of Saturday there were 20 queries pending in all, how many queries were answered during the week?
1). 77
2). 73
3). 170
4). 180

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