Two numbers are in the ratio 3 : 5. If each is increased by 10, the ratio becomes 5 : 7. The numbers are :
A, B, C start a business. If A invests 3 times as much as B invests and B invests two-third of what C invests, then the ratio of capitals of A, B, C is :
At Uttara High school each student studies exactly one foreign languages. Three-fifth of the students take Spanish and one-fourth of the remaining students take take German. If all of the others take French, What percent of the students take French?
The sum of the base angles of a is 140° and their difference is 40°. The angles of the triangle are;
If 2x-1+2x+1=320, then the value of x is:
On a certain French-American committee, 2/3 of the members are men, and 3/8 of the men are Americans, If 3/5 of the committee members are french. What fraction of the members are American Woman?
If m=ax, n=ay and mynx=a2/z, then the value of xyz is:
At 3 A.M. the temperature was 13 degree below zero. By noon, it had risen to 32. What was the average hourly increase in temperature?
In January, the value of a stock increased by 25%, and in February, it decreased by 20%.How did the value of the stock at the end of February compare with its value at the beginning of January?
The population of a country doubled every 10 years from 1960 to 1990. What was the percent increase in population during this limit?
200%
300%
700%
800%
On a test consisting of 80 questions, Nasir answered 75% of the first 60 questions correctly. What percent of the other 20 questions does he need to answer correctly for his grade on entire examination to be 80%?
A hospital has enough pills on hand to treat 10 patients 14 days. How long will the pills last if their are 35 patients ?
Avi drove from his home to college at 60 miles per hour. Returning over the same route, there was a lot of traffic, and he was only able to drive at 40 miles per hour. If the return trip took 1 hour longer. How many miles did Tie drive each way?
Let A be the set of primes less than 6,and B be the set of positive odd numbers less than 6. How many different sums of the form a+b are possible,if a is in A and b is in B?
A researcher computed the mean, the median and the standard deviation for a set of performance scores. If 5 were to be added to each score, which of these three statistics would change?
If the angles of a five-sided polygon are in the ratio of 2:3:3:5:5, what is the measure of the smallest angle?
A student loses a mark for every wrong answer and scores 2 marks for every correct answer. If he answers all the 60 questions in an exam and scores 39 marks, how many of them were correct ?
Six consecutive whole numbers are given. The sum of the first three numbers is 27. What is the sum of the last three numbers?
120 students in a class play cricket or football or both. If 75 students play cricket and 60 students play football, how many play both?
Three boys have marbles in the ratio of 19 : 5 : 3. If the boy with the least number has 9 marbles, how many marbles does the boy with the highest number have?