Elitmus
Exam
Numerical Ability
Ratio and Proportion
If the sum of 4 times a number A and 3 times a number B is equal to the sum of number B and seven times the number A, then what is the value of A:B?
a, 2:3 b,3:2 c, 4:3 d, 3:4
Read Solution (Total 8)
-
- a) 2 : 3
Given:
4A + 3B = B + 7A
=> 2B = 3A
=> A/B = 2/3
=> A : B = 2 : 3 - 10 years agoHelpfull: Yes(10) No(0)
- ans is a 2:3
- 10 years agoHelpfull: Yes(1) No(1)
- 4 A+ 3 B=1 B+ 7 A
3 B-1 B=7 A-4 A
2 B=3 A
B/A=3/2
A:B=2:3 - 7 years agoHelpfull: Yes(1) No(0)
- 4a + 3b = b + 7a
3a = 2b
a/b = 2/3
Ans . a) 2:3 - 10 years agoHelpfull: Yes(0) No(0)
- from question we can write 4A+3B=B+7A hence ans is 2:3
- 10 years agoHelpfull: Yes(0) No(0)
- 4a+3b=b+7a
a/b=2:3 - 5 years agoHelpfull: Yes(0) No(0)
- 4A+3B=B+7A
3B-B=7A-4A
2B=3A
A:B=2:3 - 5 years agoHelpfull: Yes(0) No(0)
- 2:3
given 4A+3B=B+7A THEN
7A-4A=3B-B
3A=2B
A:B=2:3 - 3 years agoHelpfull: Yes(0) No(0)
Elitmus Other Question
The number of 6 digit even numbers that can be made from the number 214635 are..
a,360
b,120
c,72
d,18
The difference of two numbers is 14.their lcm and hcf are 441 and 7.find the numbers.
a, 21,35
b, 35,49
c, 49,63
d, 63,77