Joachim has 2/3 as many marbles as Leanne. Leanne has 1/2 as many marbles as Alex. If Alex has 36 more than Joachim, how many marbles do they have altogether?

99 marbles

Step-by-step explanation:

Let number of marbles with Alex be

Leanne has 1/2 as many marbles as Alex.

So,

Number of marbles with Leanne =

Number of marbles with Joachim =

Also, Alex has 36 more marbles than Joachim.

So,

Number of marbles with Alex = 36 + Number of marbles with Joachim

=

So,

So,

Number of marbles with Alex = 54

Number of marbles with Leanne =

Number of marbles with Joachim =

Total number of marbles =

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24