Dan and mario went to a sandwich shop to buy sandwiches for their group of friends. dan bought 2 tuna and 5 vegetarian sandwiches for $37. mario bought 4 tuna and 3 vegetarian sandwiches for $39. which system of equations can be used to solve for the cost of each kind of sandwich

Step-by-step explanation:

Given : Dan bought 2 tuna and 5 vegetarian sandwiches for $37. Mario bought 4 tuna and 3 vegetarian sandwiches for $39.

To Find: Which system of equations can be used to solve for the cost of each kind of sandwich

Solution:

Let the cost of 1 tuna be x

Cost of 2 tuna = 2x

Cost of 4 tuna = 4x

Let the cost of 1 vegetarian sandwich be y

Cost of 5 sandwiches= 5y

Cost of 3 sandwiches= 3y

Since we are given that Dan bought 2 tuna and 5 vegetarian sandwiches for $37

So, equation becomes:

Mario bought 4 tuna and 3 vegetarian sandwiches for $39.

So, equation becomes:

Hence  system of equations can be used to solve for the cost of each kind of sandwich :

c

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %