Question

(1) there are 42 student in a class 3 upon 4 of the boys and 2 upon 3 of the girls travel to school by bus the total number of the boys and girls who came to school by bus 30 how many boys are there in class how many girls come to school by bus
(2) AlbertAlbert invited his friend to his birthday party the birthday cake was cut into 12 pieces Ashu to 1 upon 3 piece of the entire cake box ki to 1 upon 4 of cake does took one upon 6 and any got one upon 6 of it was there was any piece left front to come
(3) 33 upon a tour of the people at a restaurant or other words if there are 19 more children than other how many​

Answer 1

Answer:

Number of students in class = 42

Let the number of boys in class = x

Then number of girls in class = (42 - x)

According to the question

3x/4 + 2(42 - x)/3 = 30

⇒ 3x/4 + 28 - 2x/3 = 30

⇒ 9x/12 - 8x/12 = 30 - 28

⇒ x/12 = 2

⇒ x = 2 × 12 = 24

Hence, number of boys in class = 24 and number of girls coming to school by bus = 2(42 - 24)/3 = 12