The total height of 3 pupils is 5.17 m. Cheko is 0.23 m shorter than Mei. Mei is 24 cm taller than Miko. What is Miko's height in metres? And the answer is not 1.57
Let Miko's height be x.
Mei's height is (x + 24) cm.
Cheko's height is (x + 24 - 23) cm = (x + 1) cm.
Converting all heights to meters, we have:
x + (x + 24)/100 + (x + 1)/100 = 5.17
Multiplying through by 100 to eliminate the fractions gives:
100x + x + 24 + x + 1 = 517
Combining like terms gives:
102x + 25 = 517
Subtracting 25 from both sides gives:
102x = 492
Dividing both sides by 102 gives:
x = 4.82
Hence, Miko's height is 4.82 meters.