5.2x7.7 = 40.71 cm squared
Q) 145+ (-15) + (-188) = ?
→ 145+ (-15) + (-188)
→ {145 - 15} - 188
→ 130 - 188
→ -58 is the solution.
1) Average of six people = # of truffles / 6 = 7 ⇒ # of truffles = 6*7 = 42.
2) Average of first four people = # of truffles of the first four / 4 = 8 ⇒ # of truffles of the first four = 4*8 = 36
3) # of truffles of the fourth person = 11
4) # of truffles of the first three people = 36 - 11 = 25
5) # of truffles of the last three people = 42 - 25 = 17
Answer 17.
