Question
In a class, the ratio of students who passed to those
who failed is 5:6. If 30 additional students had passed the exam, the ratio would shift to 17:16. How many students are there in total in the class?Solution
Let number of passed and failed students be 5x and 6x respectively. According to question, (5x + 30)/(6x – 30) = 17/16 80x + 480 = 102x – 510 22x = 990 x = 45 Total number of students in the class = 11x = 11 × 45 = 495 Hence, option c.
If total number of factors of 6,615 is 'x', then find the value of (x - 2)(x + 4).
What is the least number which when divided by 3, 15 & 18 leave a remainder 6 in each case & it is also divisible by 12?
What is the difference between the LCM and HCF of 36, 40?
Two numbers are in ratio 23:12. If their HCF is 8, then find the LCM of the given two numbers.
The ratio of two numbers is 5: 8 and their LCM is 320. What is the difference between these two numbers?
Ratio of two numbers 3:7 and their LCM is 840. Find the sum of the given two numbers.
What is the LCM of 2/3, 4/6, 8/27?
The smallest number which when divided by 28 and 32 leaves remainder 12 and 16 respectively is:
If total number of factors of 2,430 is 'x', then find the value of (x - 6)(x + 1).
If the product of two numbers is 80 and their HCF is 5, then find the LCM of the given two numbers.
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