Maths chapter profits and loss lecture 1 for all competitive exams

Profit and loss part-2

Class- 7 Math profit and loss

Susan received grades of 78, 93, 82, and 76 on four math exams. What is the lowest score she can receive on her next math exam and have an average of at least 85 on the five exams?

Calculate the profit or loss and profit or loss percent in each of the following cases: (i) C.P.= Rs 4560, S.P.= Rs 5000 (ii) C.P.= Rs 2600, S.P.= Rs 2470

Calculate the profit or loss and profit or loss percent in each of the following cases: (i) C.P.= Rs 332, S.P.= Rs 350 (ii) C.P.= Rs 1500, S.P.= Rs 1500

The "competitive edge" of a baseball team is defined by the formula sqrt(W/L) , where W represents the number of the team's wins and L represents the number of the team's losses. This year, the GMAT All-Stars had 3 times as many wins and one-half as many losses as they had last year. By what factor did their "Competitive edge" increase ?

All these magnetic materials loss their magnetic properties when

Professors Lambert and Stassen teamteach an advanced psychology class. Their students recently took their final exams, and the professors are preparing to grade them. Professor Stassen predicts that, if she graded all the exams, she would take 50% more time than Professor Lambert would if he graded all the exams. They estimate that it will take them 40 hours to grade all the exams if they grade together. Which of the following equations best represents the situation described?

A cement company earns a profit of Rs 8 per bag of white cement sold and a loss of Rs 5 per bag of grey cement sold. (a) The company sells 3,000 bags of white cement and 5,000 bags of grey cement in a month. What is its profit or loss? (b) What is the number of white cement bags it must sell to have neither profit nor loss, if the number of grey bags sold is 6,400 bags

A man purchases two fans for Rs 2160. By selling one fan at a profit of 15% and the other at a loss of 9% he neither gains nor losses in the whole transaction. Find the cost price of each fan.