Question

the average of the 2-digit numbers 37, 45, 6x and x6 is 48. what is the average of (4x+3)and (x+7)?​

Answer 1

Answer:

average,

$\frac{37 + 45 + 60 + x + 10x + 6}{4} = 48$

$\frac{148 + 11x }{4} = 48 \\ \\ 148 + 11x = 192 \\ x = 4$

now, average of

$\frac{40 + x + 3 + x + 7}{2} = \frac{58}{2} = 29$