CA Foundation doubt
Asked by Notes22 Dec 2023914 views
Ca · 23 Dec 2023
Answer 4) the answer is 64 but option is not given as by solving the gp by formula we get r(comman difference) =2 and a(first term)=2
Ca · 23 Dec 2023
Answer 3) option b- (-2)
Amit · 22 Dec 2023
Second one let the scooter's price be x then the price of moped is x+1600 and the ratio is x/x+1600 = 3/4 .Then cross multiply to get 9x = 7x + 11200. Simplyfying that will give x = 5600 and then the moped price is 5600 + 1600 = 7200
Amit · 22 Dec 2023
Let us assume the two numbers to be 3x and 4x. As per the question, the difference between their squares is 28. Therefore, we can write: (4x)2 ,,- (3x)2 = 28 Simplifying the above equation, we get: 16x2 - 9x2 = 28 7x2 = 28 x2 = 4 x = 2 (as x, cannot ,,be negative) Therefore, the two numbers are: 3x = 6 and 4x = 8
Free app · 5 lakh+ learners
Read full notes, ask doubts, follow toppers and track your study hours — free on Android and iPhone.
