If A alone take 4 days more than A and B worked together. If B alone take 16 days more than A and B together. How many days they take together? 

The selling price of the product was equal to 50% of its cost price. Two gradual discounts were offered on the product. If the first discount was 20%, then what was the second discount?

Given that (a²+b²)=60, then find the value of (a+b)²+(a–b)².

If a²+b²+c² = 2(a – b – c) – 3 then the value of 4a – 3b + 5c is 

50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is $$ {4 m^{3}}$$ , then the rise in the water level in the tank will be:

A motorist and a scooterist made a journey of 120 km at the same time and from the same place. The graph shows the progress of the journey made by each person. Study the graph and answer the questions.

How far from the start, did the motorist meet the scooterist ? (in km ) 

Price of sugar rises by 20%. By how much percent should the consumption of sugar be reduced so that the expenditure does not change?

The LCM of three different numbers is 120. Which of the following cannot be their HCF?