book
Maths Puzzle
Numerical Ability
Ratio and Proportion
3x:42=4:7, find x.
Read Solution (Total 2)
3x:42=4:7 then
21x=42*4 so
x=8
11 years ago
Helpfull: Yes(0) No(0)
3x/42=4/7;
21x=168;
then x=8
11 years ago
Helpfull: Yes(0) No(0)
book Other Question
Q. Solve by cross multiplication method;
4x+7y=10 and 10x-35/2y=25
Verify if x=3 and x=-3 are the solutions of equation
2x-1/3-2/3=1.