Um ciclista de uma prova de resistência deve percorrer 500km sobre uma pista circular de raio 200m. o número aproximado de voltas que ele deve dar é : a = 200 b = 300 c = 400 d = 500

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.