Pamela is 10 years younger than jiri the sum of their age is 70

30

Step-by-step explanation:

Let Jiri's age be x

Let Pamela's age be (x - 10)

The sum of their ages becomes

x + (x - 10) = 70

x + x - 10 = 70

2x - 10 = 70

2x =70+10

2x = 80

x = 40

Therefore, it means that Jiri's age is 40

Pamela's age is 40-10= 30

6 payments of $49 would result in Samuel owing $294, which is $6 more than the cost of his snake. Samuel would need to be charged 6 payments of $48 instead.