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16.
If 2 tables and 3 chairs cost Rs. 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost?
- A.Rs. 500
- C.Rs. 1000
- B.Rs. 750
- D.Rs. 1500
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Let the cost of a table and that of a chair be Rs. x and Rs. y respectively. |
| Then, 2x + 3y = 3500 (i) and 3x + 2y = 4000 .(ii) |
| Solving (i) and (ii), we get : x = 1000 and y = 500. |
17.
| 52.416 | 18.72 + 6.28 = ? |
- A.2.09664
- C.9.08
- B.8.36
- D.9.80
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
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18.
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= ? |
- A.1
- C.689
- B.2
- D.1023
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
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19.
The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:
- A.Rs. 3500
- C.Rs. 3840
- B.Rs. 3750
- D.Rs. 3900
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Let the cost of a chair and that of a table be Rs. x and Rs. y respectively. | ||||||||||
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| Hence, cost of 12 chairs and 3 tables = 12x + 3y = Rs. (2400 + 1500) = Rs. 3900. | ||||||||||
20.
The taxi charges in a city comprise of a fixed charge, together with the charge of the distance covered. For a journey of 16 km, the charges paid are Rs. 156 and for a journey of 24 km, the charges paid are Rs. 204. What will a person have to pay for travelling a distance of 30 km?
- A.Rs. 226
- C.Rs. 248
- B.Rs. 240
- D.Rs. 252
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Let the fixed charge be Rs. x and variable charge be Rs. y per km. | ||||
| Then, x + 16y = 156 (i) and x + 24y = 204 (ii) | ||||
| Solving (i) and (ii), we get : x = 60, y = 6. | ||||
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