One kilogram of tomatoes is 20/100 * 5 = $<<20/100*5=1>>1 cheaper than one kilogram of cucumbers.
This means that one kilogram of tomatoes costs 5 - 1 = $<<5-1=4>>4.
So two kilograms of tomatoes is a cost of 2 * 4 = $<<2*4=8>>8.
And three kilograms of cucumbers is a cost of 3 * 5 = $<<3*5=15>>15.
So the price for both products would be 8 + 15 = $<<8+15=23>>23.
#### 23