Question 8 - Figure it out - Page 78, 79, 80 - Chapter 3 Class 7 - A peek beyond the Point (Ganita Prakash)

Transcript

Question 8 Pinto supplies 3.79 L, 4.2 L, and 4.25 L of milk to a milk dairy in the first three days. In 6 days, he supplies 25 litres of milk. Find the total quantity of milk supplied to the dairy in the last three days.Now, Total quantity of milk supplied = 25 liters Quantity of milk in first three days = 3.79 L, 4.2 L, and 4.25 L Therefore, Total quantity of milk in first three days = 3.79 + 4.2 + 4.25 = 379/100+42/10+425/100 Multiplying 42/10 by 10/10 = 379/100+42/10 ×10/10+425/100 = 379/100+420/100+425/100 = (𝟑𝟕𝟗 + 𝟒𝟐𝟎 + 𝟒𝟐𝟓)/𝟏𝟎𝟎 = 1224/100 = 12.24 liters Now, Quantity of milk in last three days = Total quantity – Quantity of milk in first three days = 25 – 12.24 = 25 – 1224/100 = (25 × 100 − 1224)/100 = (2500 − 1224)/100 = 1276/100 = 12.76 liters Thus, total quantity of milk supplied to the dairy in the last three days is 12.76 liters