Forums
Equations
Maths & Stats
answered on 04-Aug-20 10:17
Sir/ma'amHow to solve when mean proportion is given
latest answer
Let numbers be x& y x+y = 45 and square root of xy = 18 and then substitute value of y i.e. y=45-x in the second equation i.e. xy=18^2=324. Then u will get 36 & 9
Soumya A
CA Inter
★ 20K+
2
570
Eqns
Maths & Stats
answered on 06-Aug-20 08:56
Mam actually dsir did using other formula.But I want to know the wrong in this formula
latest answer
We have some of roots as -b/a we do not know difference of roots so cannot apply what you have done and also U have take a^3-b^3 as (a-b)^3+3ab(a-b) but u took -3ab
Prasanth Kumar
CA Inter
★ 13K+
8
526
Equations
Maths & Stats
answered on 04-Aug-20 15:40
Two numbers are such that twice the greater number exceeds twice the smaller one by 18 and 1/3rd of the smaller and 1/5th of the greater number are together 21. The numbers are: a) (36, 45) b) (45, 36) c) (50, 41) d) (55, 46) Sir here both a and b satisfy the sum. ICAI OPTION IS B. but if I take greater no is y then option can be a SO HOW TO DIFFERENTIATE
latest answer
Please solve it and check
Prasanth Kumar
CA Inter
★ 13K+
13
592
Equations
Maths & Stats
answered on 02-Aug-20 15:34
The product of two numbers is 3200 and the quotient when the larger number is divided by the smaller is 2.The numbers are a) (16, 200) b) (160, 20) c) (60, 30) d) (80, 40) How to do without option verification
latest answer
When you solve these kind of problems by assuming variables as x & y, if you do not have two complete equations of x & y , you will get multiple answers . In this case if we assume all numbers are whole numbers and there are no decimals then xy = 3200 & x/y = 2; from equation x/y = 2 , x = 2y which can be substituted in equation 1 to get 2yy = 3200 and y = 40 => x = 80 . But there is no need to do all this when you already have options.
Prasanth Kumar
CA Inter
★ 13K+
1
616
Equation
Maths & Stats
answered on 02-Aug-20 15:36
The sum of the digits of a two digit number is 10. If 18 be subtracted from it the digits in the resulting number will be equal. The number is a) 37 b) 73 c) 75 d) none of these numbers. How to do above sum without option verfication
latest answer
using options is simpler as it saves time and helps a student spend more time on some other questions. x + y = 10 x + 10y - 18=? In this there is no second equation so it cannot be solved using equations as x & y can have multiple answers
Prasanth Kumar
CA Inter
★ 13K+
1
624
Equations
Maths & Stats
answered on 02-Aug-20 17:00
I am not able to solve this question
latest answer
Thank you ma'am
Soumya A
CA Inter
★ 20K+
3
566
Ratio and proportion
Maths & Stats
answered on 30-Jul-20 13:08
Sir/ madam in this question I used some method and understood that option (c) is the correct answer but how should we do this question in a proper way
latest answer
Thank you ma'am
Soumya A
CA Inter
★ 20K+
5
567
Answer is wrong
Maths & Stats
answered on 14-Aug-20 23:27
Sir, In Business Mathematics Chapter 7 unit 7 Ilustrations For 3 sum sir done solution wrong instead 6 he said -6 so try to correct in video clip sir Sir don't think wrong about me for saying this to u I hope u will correct. Thanking you.
latest answer
K
THARUN KUMAR EKAMBARAM
CA Foundation
★ 18K+
7
606
Time series
Maths & Stats
answered on 22-Jul-20 16:36
Where are the problems related to time series chapter done????
latest answer
Our team is working on it. Will inform you once the videos are uploaded.
Soumya A
CA Inter
★ 20K+
4
573
LR
Maths & Stats
answered on 19-Jul-20 12:54
Sir can you please explain 12th question of exercise 13(A) in syllogism chapter through VENN DIAGRAM only...
latest answer
Conclusion 1 - Some erasers are papers. this is true As X = C + B + A and if B & C are >0, then some erasers are papers. If B&C are both 0 even then Erasers are papers. The Conclusion stands whether value of B& C is = 0 or >0 Conclusion 2 - Some pens are not papers - this is false because if B= 0, then all pens are papers So final Answer is a - only Conclusion 1 is right
Netaji Srinivas
CA Foundation
★ 1K+
1
596