Ahad buys 80kg sugar at Taka 40 per kg and 40 kg rice at Taka 50 per kg. At what price approximately in Taka per kg should he sell to make a profit of 10% on cost ?

Find the ratio of purchase price to sell price if there is loss of 12.5% ?

Find the area of a right angled triangle whose hypotenuse is 10 cm and base 8 m.

A is two years older than B who is twice as old as C. If the total age of A,B and C is 27, then how old is B ?

A person crosses a 600 meters long street in 5 minutes. What is his speed in kilometers per hour ?

For what value of 'K' will the pair of equations 3x+4y=12 and kx+12=30 does not have a unique solution ?

If one of the roots of the quadratic equation x^2+mx+24= 0 is x=1.5, then what is the value of m ?