Question

a cupboard has 20 cloths worth 100 dollars if shirts are 3 dollars each and pants are 11 dollars each how many pants are there ​

Answer 1

Step-by-step explanation:

let x be the no. of shirt and y be the no. of pants

from this we get 2 equations

x+y=20 &

3x+11y=100

from (1)equation

3×(20-y)+11y=100

60-3y+11y=100

8y=40

y=5

there are 5 pants

Answer 2

Answer:

let x be shirt and y be pants

3x + 11 y = 100 equation 1

x+y =20 equation 2

.multiply equation 2nd by 3 and subtract it by equation 1st we get

8y=40

y=5

putting y in equation 1st

we get

x =15

so 5 pants and 15 shirts are there