Answer:
(25 × 10") + 153 × 10" = (25 +153) × 10" = 178 × 10" = 1780"
Explanation:
a) Numbers are miscopied: the numbers in parentheses should be (25 +153). Of course, the sum of these should be 178, not 78.
b) The common factor 10" is somehow expanded to 110' x 10°. It should be 10".
The sum should be ...
(25 × 10") + 153 × 10" = (25 +153) × 10"
= 178 × 10" = 1780" . . . . . correct sum
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Maybe the middle step is an attempt to convert to feet.
1780" × (1')/(12") = (148 1/3)' = 148' 4"