The cost of 5 litres of petrol is ₹ 110 then the cost of 8 litres is ……………..
A) ₹ 671
B) ₹ 176
C) ₹ 186
D) ₹ 216
Correct option is A) 220 A
2 Answers 1 viewsCorrect option is (D) Rs \(18\frac{3}{4}\) \(\because\) Cost of \(5\frac{2}{5}\) litres of milk = Rs \(101\frac{1}{4}\) \(\Rightarrow\) Cost of \(\frac{27}{5}\) litres of milk = Rs \(\frac{405}4\) \(\therefore\) Cost of 1 litres of milk = Rs \((\frac{405}4\div\frac{27}5)\) = Rs \((\frac{405}4\times\frac5{27})\) = Rs \((\frac{45}4\times\frac5{3})\) = Rs \((\frac{15\times5}4)\) = Rs \(\frac{75}4\) = Rs \(\frac{18\times4+3}4\) = Rs \((18+\frac34)\) = Rs \(18\frac{3}{4}\).
2 Answers 1 viewsC) both ‘A’ and ‘B’
2 Answers 1 viewsCorrect Answer - ₹5,₹8,₹8
2 Answers 1 viewsCorrect option is (B) ₹ 176 \(\because\) The cost of 5 litres of petrol = Rs 110. \(\therefore\) The cost of 8 litres of petrol \(=Rs\,(\frac{110}5\times8)\) \(=Rs\,(22\times8)\) = Rs 176
2 Answers 1 viewsLet the cost of 1 pen be ‘a’ and the cost of 1 pencil be ‘b’. Given, 5 pens and 6 pencils together cost Rs 9. 5a + 6b = 9 --------- (1) Given, 3...
2 Answers 1 viewsLet the cost of 1 table be ‘a’ and cost of 1 chair be ‘b’. Given, 4 tables and 3 chairs, together, cost Rs 2,250 and 3 tables and 4 chairs cost...
2 Answers 1 viewsCorrect Answer - B Make algebraic equation and proceed
2 Answers 1 viewsCorrect Answer - B `W=-2.303 nRT "log" V_(2)/V_(1)`
2 Answers 1 views