R-SAT Exam Category

If the numerator of the fraction is increased by 30% and the denominator diminished by 20%. The value of that fraction is 13/10
Find the original factor?

A. 2/5
B. 10/13
C. 3/5
D. 4/5
E. none

Read Solution (Total 3)

D) 4/5
Solution---
Let the fraction be x/y
According to question, (x+0.3x)/(y-0.2y)=13/10
Solving,x/y=8/10=4/5
7 years agoHelpfull: Yes(1) No(0)

D. 4/5

(x+3x/10)/(y-2y/10)=13/10
(13x/10)/(8y/10)=13/10
x/y= (13/10)*(8/13)= 8/10 = 4/5
7 years agoHelpfull: Yes(1) No(0)
D.
130 of x/80 of y=13x/10y
13x/8y=13x/10
x/y=104/130
x/y=4/5
6 years agoHelpfull: Yes(0) No(0)

R-SAT Other Question

In a two digit , if it is known that thrice its units digit is four less than twice it's ten's digit and its ten's digit is thirteen less than four times it's unit digit, then the number is:

A. 24
B. 46
C. 26
D. 52
E. none When 5% is lost in grinding Wheat , a country has to import 20 million bags but when only 2% is lost, it has to import only 15 million bags. Find the quantity of wheat, which grows in the country.

A. 166(1/3)
B. 166(2/3)
C. 166
D. 170
E. None