k=50 ∑ (4k+2)= ? k=1
If K=1, 4X1+2=6 if K=50, 4X50+2= 202 So, 202-6=196
A wall is 6 meters long and 4 meters height. What is its one side area?
Now imagine , wall of house that is 6 meter long and 4 meter height. So that Length X breadth = Area. so, 6X4=24 square meter. Area
A mixture constituents of Milk and water in the ration of 2:1 But milk man added 6 liters of pure water to this for getting some benefits. The ratio of milk and water becomes 4:5. What is the quantity of original mixture?
Let us consider the water is X liters. Water is denoted as W= 1x and Milk is denoted as M=2x, So M: W= 2x:1x ---------- (eqn-1) 6 liters pure water added means W= 1x+6. The ratio of Milk and water is M: W = 2x:1x+6, This is equal to ratio 4:5 after mixing. It means 2x:1x+6= 4:5 ---------------(eqn-2) After finding solution .of eqn-2 x is found to be 4. so that Milk is 8 and water is 4 in original quantity.