Question

Can anyone solve this question​

Answer 1

12 in Mathematics and 16 in Science

Explanation:

12+16=28

12+3=15 and 16-4=12

15*12=180

Answer 2

He got 12 marks in mathematics and 16 in science.

Explanation:

M + S = 28, (M + 3)(S - 4) = 180.

(M + 3)(S - 4) = MS - 4M + 3S - 12 = 180

MS - 4M + 3S - 12 = 180

MS - 4M + 3S = 192

M + S = 28

S = 28 - M

M(28 - M) - 4M + 3(28 - M) = 192

28M -
`M^(2)` - 4M + 84 - 3M = 192

-
`M^(2)` + 21M = 108

-
`M^(2)` + 21M - 108 = 0

(-M + 9)(M - 12) = 0

M = -9, 12

S = 37, 16

1st solution:

(-9 + 3)(37 - 4) = 180

-6 * 33 = 180

-198 = 180

2nd solution:

(12 + 3)(16 - 4) = 180

15 * 12 = 180

180 = 180

Therefore, M = 12 and S = 16.