Q1. Darshan goes daring path with an average speed of 24 kmph and comes down with an average speed of 36 kmph. The distance travelled in both the cases being the same, the average speed for the entire journey is:
Q2. The ratio of the age of a father to that of his son is 5: 2. If the product of their ages (in years) is 1000, then the father’s age (in years) after 10 years will be:
Age of son = 2x
A/c,
10x² = 1000
⇒ x = 10
∴ Father’s age 10 years later = 50 + 10 = 60 years
Q3. Fresh fruits contain 80% water, while dry fruits contain 10% water. If the weight of dry fruits is 500 kg, then what was it when fruits were fresh?
Q4. The simple interest on a certain sum for 8 months at 4% per annum is Rs. 129 less than the simple interest on the same sum for 15 months at 5% per annum. The sum is:
Q5. Nitesh and Mukesh can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time, then Mukesh left the work. If Nitesh completed the rest of the work in 10 days, then Mukesh worked for
Directions (6-10): In each of these questions two equations are given. You have to solve these equations and give answer.
Q6.
Directions (11-15): what will come in place of the question mark (?) in the following questions?
Q11. 654 + 54% of 850 = 750 + ?
= 363
Q15. 54% of 550 + 42% of 425 – 34% 650 = ?