Find the profit of the horse deal ?

A man decides to buy a nice horse. He pays $60 for it, and he is
very content with the strong animal. After a year, the value of the
horse has increased to $70 and he decides to sell the horse.
But already a few days later he regrets his decision to sell the
beautiful horse, and he buys it again. Unfortunately he has to pay
$80 to get it back, so he loses $10. After another year of owning
the horse, he finally decides to sell the horse for $90.

What is the overall profit the man makes?

Solve 2 3 4 15 12 3 4 5 28 20 4 5 6 45 30 5 6 7 66 42 6 7 8 ? 56

Find the missing number ?

2 . 3 . 4 . 15 . 12
3 . 4 . 5 . 28 . 20
4 . 5 . 6 . 45 . 30
5 . 6 . 7 . 66 . 42
6 . 7 . 8 . ?? . 56

Chocolates

A shop sells 1 chocolate at Rs:1 each, You can exchange 3 wrappers for a chocolate. If you have Rs:15, then how many chocolates can you totally get ?

Answer is 22 Chocolates

1) with Rs:15 you will get 15 chocolates --->15 wrappers
2)15 wrappers /3 = 5 chocolates ------> 5 wrapers
3) 5 wrappers /3 = 1 chocolate +2 wrappers------->3 wrappers
4) 3 wrappers / 3 = 1 chocolate

Total chocolates = 15+5+1+1 =22

Check also : How many Chocolates you will get if you have Rs. 45

60, 30, 20, 15, ?, ?

Find next two numbers in the series:
60, 30, 20, 15, ?, ?