What are negative and positive effect on listening comprehension​

The gardeners at middleton place gardens want to plant a total of 37 white and pink hydrangeas in one flower bed. in another flower bed, they want to plant 99 hydrangeas. in this bed, they want 2 times the number of white hydrangeas and 3 times the number of pink hydrangeas as in the first bed. use a system of equations to find how many white and how many pink hydrangeas the gardeners should buy altogether.