Question

Four boys started walking from same place .If their steps measure 16cm,28cm,40cm and 55 cm.At what steps they will together meet. (lcm/hcf)

Answer 1

Answer:

LCM: 12320cm OR 123.2m

HCF: 1

Step-by-step explanation:

LCM:-

2 | 16, 28, 40, 55

2 | 8, 14, 20, 55

5 | 4, 7, 10, 55

2 | 4, 7, 2, 11

2 | 2, 7, 1, 11

2 | 1, 7, 1, 11

7 | 1, 1, 1, 11

11 | 1, 1, 1, 1

2*2*5*2*2*2*7*11

LCM= 12320CM

Convert cm to m= 1m= 100 cm

=12320/100

=123.2 m

HCF= 1

Answer 2

CLASS 5 MATH MAGIC:

LET US MULTIPLY THESE

16-   16 , 32 ,48, 64, 80 96, 112, 128, 144,160

28-  28 , 56 , 84 ,112 , 140 , 168 , 196 , 224 , 252 , 280

40-  40 , 80 , 120 , 160 , 200 , 240 , 280 , 320 , 360 , 400

55 - 55, 110 , 165 , 220 , 275 , 330 , 385 , 440 , 495 ,550

LET US CHECK ALL THE NUMBERS: