Let the Number of boys and Girls who appeared in exam be x and y respectively, So, according to question- Number of boys passed in exam = [(100 - 20) × x]/100 = 0.80x Number of girls passed in exam = [(100 - 15) × y]/100 = 0.85y Condition (1) - ⇒ 0.80x = 0.85y + 70 ⇒ 0.80x - 0.85y = 70 ...(i) Condition (2) - Total failed students = 90 ⇒ 0.20x + 0.15y = 90 ...(ii) From eqn (1) - [4 × eqn (ii)] ⇒ (-0.85y) - 0.60y = 70 - 360 ⇒ 1.45y = 290 ⇒ y = 200 Put this value in eqn (i) ⇒ 0.80x = 0.85 × 200 + 70 ⇒ 0.80x = 170 + 70 = 240 ⇒ x = 300 So, total number of students appeared in exam = 300 + 200 = 500.
A) Jamaica is one of the most beautiful islands in the world.
B) Visitors can see, eat or drink Jamaica’s exports such as sugar, citrus fru...
Which of the following is the fourth sentence after rearrangement of the given paragraph?
Which of the following is the fifth sentence of the passage?
Which is the FIRST sentence of the paragraph?
Which should be the second sentence after rearrangement?
Which of the following is the first sentence after rearrangement?
The consulate general and with the yoga school trainers organized the event at a park in the township.
Which of the following is the fourth sentence of the passage?
Which should be the fourth sentence after rearrangement?
Water and pesticides(P)/ requires large amounts of(Q) Sugarcane cultivation(R)/, which can have a negative impact on the environment(S).
