dhruvikaran invested money from may 2016to April 2018 at a rate of 12% per annum. if the interest received by her is ₹ 1,680 , how much money did she invest ?

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

43lbs of tomatos cost $387. how much would 41lbs cost

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500