The ratio of age of A and B after 8 years is 4:5 respectively. The ratio of age of A and C 6 years ago is 3:4 respectively. If the present average age of A and C is 30 years, then find the present age of C.
ATQ,
The ratio of A and B's ages after 8 years is 4:5, so we get the equation 5(A+8)=4(B+8), which simplifies to 5A−4B=−8. The ratio of A and C's ages 6 years ago is 3:4, giving us the equation 4(A−6)=3(C−6), which simplifies to 4A−3C=6. The average age of A and C is 30, so A+C=60. Solving the system of equations, we substitute A = 60 − C into the second equation and solve to get C=33.43. Thus, the present age of C is approximately 33.43 years.
Commotion
In the following question, select the choice whose meaning is opposite to the word shown in bold for below question.
Astonish
...A) Certain B) Velocity C) Slowness D) Settled
Select the INCORRECTLY spelt word.
Select the most appropriate opposite of the given CONCURRENCE
Choose the word that means the same as the given word.
Ridicule
A) Subdue B) Loose C) Stimulate D) Careless
Select the most appropriate ANTONYM of the given word.
Tranquil
DISPENSE
To take back or withdraw something that has been given or granted
