I think it’s A because the s is between P&Q and S&C if it’s wrong I’m sorry!
We could do it with algebra. But we can also do it the long way, which is
shorter than the algebraic way.
The digit in the tens place is 3 times the digit in the units place.
So the number MUST be
31, or
62, or
93 .
It can't be anything else.
Now here they are again, with the reverse of each one:
31 . . . 13 The new number is 18 less.
62 . . . 26 The new number is 36 less.
93 . . . 39 The new number is 54 less.
Obviously, the original number is 62.
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 7 = 35
24/3=8
Therefore one third of the can is 8 liters.
24-8=16.
Peter has to fill 16 liters.
