So,
One tenth of 24 is the same as this:

Multiply
Could you do 31 add 31 which would also be 31 multiplyed by 2
hope this helps
Answer:
7,600
Step-by-step explanation:
both parents invest 7,600.
7,600x2= 15,200
there are 2 girls so divide 15,200 by 2 and u get 7,600