In a class of 40 students and 11 teachers, each student got sweets that are 25% of the total number of students and each teachers got sweets that are 50% of total no. of students. How many sweets were there ?
Note: Change the co-efficients of the middle term such that their sum is equal to the coefficient of middle term and their product is equal to the product of the constant term and co-efficient of x2 .
Step 2: Divide the factors by the coefficient of x2.
Step 3: Change the sign.
Manish borrowed a sum of Rs 1,150 from Anil at the simple rate of 6 p.c.p.a. for 3 years. He then added some more money to the borrowed sum and lent it to Sunil for the same time at 9 p.c.p.a. at simple interest. If Manish gains Rs 274.95 from the whole transaction, then what is the sum lent by him to Sunil ?