Wipro Company Numerical Ability Number System

If a, b, and c are positive integers and 3a= 4b = 7c, then the least possible value of a + b + c is
A. 33
B. 40
C. 49
D. 61
E. 84

Read Solution (Total 1)

lcm of 3,4 and 7 is 84.
so divide by 84 to get a/28=b/21=c/12=k(say).
now, a=28k
b=21k
c=12k
we want least sum so putting k=1
so we get a+b+c=28+21+12=61.
option d is correct.
8 years agoHelpfull: Yes(0) No(0)

Wipro Other Question

If the area of a square region having sides of length 6 centimeters is equal to the area of a rectangular region having width 2.5 centimeters, then the length of the rectangle, in centimeters, is
A. 9.6
B. 10.5
C. 9.5
D. 14.4
E. 8.5 A part-time employee whose hourly wage was increased by 25 percent decided to reduce the number of hours worked per week so that the employeeâ€™s total weekly income would remain unchanged. By what percent should the number of hours worked be reduced?
A. 12.5%
B. 20%
C. 25%
D. 50%
E. 75%