How to find the area of a triangle
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Answer:
<em>The number of restaurant-purchased meals eaten in a restaurant is 75, the number eaten in a car is 33 and the number eaten at home is 55.</em>
Step-by-step explanation:
Suppose, the number of meals eaten in a restaurant is , in a car is
and at home is
The total number of meals eaten in a restaurant, in a car or at home is given as 163. So, the first equation will be......
The total number meals eaten in a car or at home exceeds the number eaten in a restaurant by 13. So, the second equation will be......
Twenty more restaurant-purchased meals will be eaten in a restaurant than at home. So, the third equation will be......
First, <u>substituting equation (2) into equation (1)</u>, we will get........
<em>Now plugging this into equation (3)</em>, we will get......
<em>Plugging and
into equation (1)</em> .........
So, the number of restaurant-purchased meals eaten in a restaurant is 75, the number eaten in a car is 33 and the number eaten at home is 55.