Question

m+n+p+r =100 m+p=68 p=4×n r =23

Answer 1

m + n + p + r = 100
m + p + n + r = 100
m+ 4n + n + r = 100
68 + n + 23 = 100
n = 100 - 23 - 68
n = 9
p = 4 × n
p = 9 × 4
p = 36
m+ p = 68
m + 36 = 68
m = 68 - 36
m = 32

Answer 2

m+n+p+r=100
m+p=68
r=23
=> n+68+23=100
n=100-68-23
n=9

p=4*n
p=4*9
p=36

m+p=68
m+36=68
m=68-36
m= 32