Mathematics: 1. Mario and Lydia were partners on a class project. The ratio of the number of hours that Mario worked on the project to the number of hours Lydia worked on the project was 7 to 8. Together, they worked 30 hours. How many hours did each student work on the project?

1. Mario and Lydia were partners on a class project.

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23.12.2022

Step-by-step explanation:

10.

let money Raggie had=x

Melissa had=2x

2x-200=x-25

2x-x=200-25

x=175

2x=2×175=350

Melissa had money at first=$350

11.

wight of beans=1 kg 60 gm-750 g

=1060-750=310 gram

12.

Total wt.=77.2+90.4+120.2=287.8 lb

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