38. The average height of 16 students is 142cm. If the height of the teacher is included, then average height increased by 1 cm. The height of the teacher is ( 16 విద్యార్థుల సరాసరి ఎత్తు 1 cm. ఆ సగటు లొ వాళ్ల టీచర్ యొక్క ఎత్తు కలిపిటే అది 1 cm పెరుగిలే ఆటీచర్ ఎత్తు) A) 156 cm B) 159 cm/ C) 158 cm/ D) 157 cm
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Answer:
B) 159 cm is the correct option.
Step-by-step explanation:
159
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Answer:
sum of the 16 students height is = 142*16 = 2272
new average is = 142+1=143
teacher height is = x
143= 2272+x/ 17
143× 17 = 2272+x
2431-2272 = x
159 = x
teacher height is 159
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