Subject
Quantitative Aptitude
Topic
Partnership
75% of students of a class answered question No.1 correct and 55% answered Question No.2 correct and 20% answered neither question correctly. What percent of students answered both questions correctly?
75% of students of a class answered question No.1 correct and 55% answered Question No.2 correct and 20% answered neither question correctly. What percent of students answered both questions correctly?
ক)
20খ)
35গ)
45ঘ)
50Explanation
Students answered Q.-1 or Q.-2 or both correctly = (100-20) = 80% Let, x% students answerd both correctly. .:. (75-x) + (55-x) + x = 80 130-x = 80 .:. x= 50Related questions
A 6% stock yields 8%. The market value of the stock is :What was the original price of a pen (in Taka) if it is bought for Tk. 100 at 20% discount?Three milkmen rented a pasture. A grazed 24 cows for 4 months; B 10 cows for 6 months; C 56 cows for 5 months. If A's share of rent is Rs. 960, find the total rent of the field?If a=-1, then, (a4+a3+a2+a)=A and B invests Rs.10000 each, A investing for 8 months and B investing for all the 12 months in the year. If the total profit at the end of the year is Rs.25000, find their shares?125 gallons of a mixture contains 20% water. What amount of additional water should be added such that the water content is raised to 25%Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ?After being marked down 20 percent, a calculator sells for Tk. The original selling price was-