Related Questions

The ratio of boys to girls in class A is 3 to 4 . The ratio of boys to girls in class B is 4 to 5 . If the two classes were combined, the ratio of boys to girls in class B is two less than the number of girls in class A. How many girls are in class A?
ক 87
খ 11
গ 12
ঘ 15
There are blank spaces in the following passage which have been numbered . These numbers are printed below the passage and against each some words are suggested . Find out the word that best fit the blank spaces. Global Strategies to control infective disease have historically included the erection of barriers to international travel and ___ (24) _______. Keeping people with such deadly disease outside national borders has ___ (25) _______ as an important public health policy in the human immunodeficiency virus (HIV) epidemic . Betwwn 29 and 50 countries ___ (26) _____ to have introduced border restrictions on HIV _ positive foreigners ,usually those planning an ___ (27) ___ stay in the country , such as students , workers or seamen.
ক migration
খ immigrate
গ emigration
ঘ immigration
The ratio of boys to girls in a class 2/5. If 2 boys leave and 4 girls join the class, the ratio of the boys to the girls becomes 1/4. Originally, how many girls were in the class?
ক 16
খ 20
গ 21
ঘ 24
The ratio between boys and girls in a class is 2 : 5 . If 2 boys leave and 4 girls join the class, the ratio of the boys to the girls becomes 1 :4 what is the original number of girls in the class?
ক 15
খ 20
গ 18
ঘ 25
The number of bacteria in a colony was growing exponentially . At 1 pm yesterday the number of bacteria was 1000 and at 3 pm yesterday it was 4000. How many bacteria were there in the colony at 6 pm yesterday ?
ক 32,000
খ 80,000
গ 60,072
ঘ 7,683
A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 3 classes were half full, 5 class were 3/4 full and 2 classes were 1/6 empty. A total of 74 students were absent. What is the total number of students in this school?
ক 200
খ 220
গ 240
ঘ 246
A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 3 classes were half full. 5 classes were 3/4 full and 2 classes were 1/6 empty. A total of 74 students were absent. What is the total number of students in this school?
ক 200
খ 220
গ 240
ঘ 400
A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 5 classes were half full, 3 classes were 3/4 full and 2 classes were 1/8 empty. A total of 70 students were absent. What is the total number of students in this school?
ক 200
খ 220
গ 250
ঘ 400
The ratio of number of boys to the number of girls in a certain school club is 3:4.if there are 5more girls than boys in the club ,how many girls in the club?
ক 20
খ 8
গ 12
ঘ 15
In a certain class 40% of the students are girls, and 20% of the girls wear glasses. What percent of students in the class are girls who wear glasses.
ক 6%
খ 8%
গ 20%

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