The number of students passing mathematics test is `75%` of the number that appeared. This can be express in ratio form as :

75% of what number is 15?

Express the following ratios in the language of daily life: In an examination, the ratio of the number of students passing the examination to the total number of students that appeared in the examination is 4:5. Water is formed by combining volumes of oxygen and hydrogen in the ratio 1:2. To dilute an acid, students were asked to mix acid and water in the ratio 2:3.

Express each of the following in the language of ratios: In a class, the number of girls in the merit list of the board examination is two times that of boys. The number of students passing mathematics test is 2/3 of the number that appeared.

Express each of the following in the language of ratios: In a class, the number of girls in the merit list of the board examination is two times that of boys. The number of students passing mathematics test is 2/3 of the number that appeared.

In an examination the percentage of students qualified to the number of students appeared from school A is 70%. In school B, the number of students appeared is 20% more than the student appeared from school A and the number of students qualified from school B is 50% more than the students qualified from school A. What is the percentage of students qualified to the number of students appeared from school B? 30 % b. 70 % c. 78. 5 % d. 87.5%

In an examination 50% of the students passed in Mathematics and 70% of students passed in Science while 10% students failed in both subjects. 300 students passed in atleast one subjects. Find the total number of students who appeared in the examination, if they took examination in only two subjects.

In a University there are 1200 students studying four different subjects, Mathematics, Statistics, Physics and Chemistry. 20% of the total number of students are studying Mathematics, one-fourth of the total number of students are studying Physics, 320 students are studying Statistics and remaining students are studying Chemistry. Three-fifth of the total number of students studying Chemistry are girls. 150 boys are studying Mathematics. 60% of students studying Physics are boys. 250 girls are studying Statistics. What is the ratio of the total number of boys to the total number of girls ?

What is the total number of students in a college ? I. 75% of the total number of students are boys. II. The ratio of number of girls to the number of boys is 1:3.

The marks obtained by 120 students in a Mathematics test are given below: Using the informations, given above, draw an ogive on a graph sheet. Take a suitable scale for your ogive. Use the ogive drawn to estimate : (i) the median. (ii) the number of students who obtained more than 75% marks in the test. (iii) the number of students who did not pass in the test if the pass percentage was 40.

Read the following information carefully and answer the questions given below- 1000 students appeared in an examination Out of which 275 students passed in physics, 320 students passed in chemistry and 350 students passed in mathematics. 84 students passed in both chemistry and mathematics 60 students passed in both physics and mathematics, 50 students passed in both physics and chemistry and 34 students passed in all the three subjects. What is the ratio of students passed in physics and mathematics to the number of students passed in physics and chemistry?