| **Answers & Solutions ** | | 1 . | Answer : Option A | Explanation : | Only for project A, the value of cost per room is less than half crore, whereas in other projects it is either more than or equal to half crore. | | | 2 . | Answer : Option B | Explanation : | | | | 3 . | Answer : Option D | Explanation : | Total no. of rooms over the three-year period
= 600 + 320 + 250 + 400 + 520 + 450 + 500
= 3040
reqd average no. of rooms per crore of rupees
= $3040 \over 2125$ = 1.4 | | | 4 . | Answer : Option C | Explanation : | When the interest rate is 10% p.a. at SI, then the total cost in 2000
= 330 + 231 + 275 + 516 +310 + 480 + 250
= `2392 cr
Avg. cost per room = $2392\over 3040$ = 0.80 cr | | | 5 . | Answer : Option C | Explanation : | | | | 6 . | Answer : Option C | Explanation : | The given question gives the amounts of investment of P, Q and R, which is P = `12000, Q = `9000 and S = ` 21000. Statement (A) combined with the question’s information will give us the ratio of their profits, i.e. 4:6:7. Now, combine this either with B or C, and profit earned by them can be determined. Therefore, A and either B or C is sufficient. | | | 7 . | Answer : Option D | Explanation : | | | | 8 . | Answer : Option C | Explanation : | Statement (A) gives the cost of fencing one metre of the plot. Combining this with statement (B), total cost of fencing can be determined | | | 9 . | Answer : Option D | Explanation : | | | | 10 . | Answer : Option A | Explanation : | | | | | |

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