For the following questions answer them individually
If $$a : b = 1 : 2 , b : c = 3 : 5 , c : d = 5 : 4 and e : d = 5 : 6$$ then $$a : b : c : d : e =$$
If the average of three persons is 20 years and the ages are in the ratio 2:3:5 then the ages (in years) of the youngest among them is
In a Joint business A invested thrice that of B and the period of Investment of A is twice that of B.If the share of B in the Profit of Rs.40,000/- and If A donates a sum of Rs.50000/- to a trust from his share then the amount left with A in the profit (in lakhs of rupees) is
A person A purchased a watch for Rs. 4800 and sold it to B for 8% profit. B sold it to C for 12% loss, The amount paid by C, corrected to nearest rupee, is
If 175 workers can dig a canal of 3150 m long in 36 days, then the number of workers require to dig a similar canal of 3900 m long in 24 days is
If a train run at speed of 40kmhr reaches destination late by 11 minutes but if it runs 50 kmph it is late by 5 min only, then the distance travlled by train in Kms is
The following table shows the marks of 20 students of class in Mathematics. Then the average marks of these 20 students is
An article has marked price of Rs.3600. By giving two successive discounts of 10% each instead of giving a discount of 20% on the marked price,then the gain of trader in rupees is
The average of least and greatest fractions among $$\frac{11}{13}, \frac{5}{6}, \frac{7}{8}, \frac{13}{15}$$ is
If $$a and b$$ are positive integers such that $$b < 100$$ and $$72.48 = a \left(24 + \frac{b}{100}\right)$$ then $$a + b =$$