Question 2 - Figure it out - Page 175 - Chapter 7 Class 8 - Proportional Reasoning-1(Ganita Prakash)

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Question 2 In a science lab, acid and water are mixed in the ratio of 1 : 5 to make a solution. In a bottle that has 240 mL of the solution, how much acid and water does the solution contain?Given that acid and water are mixed in the ratio of 1 : 5 So, we can write Amount of Acid : Amount of Water = 1 : 5 Converting into fractions (𝑨𝒎𝒐𝒖𝒏𝒕 𝒐𝒇 𝑨𝒄𝒊𝒅)/(𝑨𝒎𝒐𝒖𝒏𝒕 𝒐𝒇 𝑾𝒂𝒕𝒆𝒓 )=𝟏/𝟓 Cross multiplying 5 × Amount of Acid = Amount of Water Amount of Water = 5 × Amount of Acid Now, Total solution = 240 mL Amount of Acid + Amount of water = 240 Putting Amount of Water = 5 × Amount of Acid Amount of Acid + 5 × Amount of Acid = 240 Amount of Acid × (1 + 5) = 240 Amount of Acid × 6 = 240 Amount of Acid = 240/6 Amount of Acid = 40 mL Thus, Amount of Water = 5 × Amount of Acid = 5 × 40 = 200 mL Thus, the solution contains 40 mL of acid and 200 mL of water.