a comet passed by the earth in the year 1935 . it passes by the earth once in every 60 years. In which of the following years can the comet be expected to pass by the earth
Answers
d=60
1935,1995,2055,2105
Answer:
Correction: It is 1835 in most questions as mentioned in grade 6 NSTSE 2009 which is given with options - a) 2035 b) 2060 c) 2075 d) 2080
Step-by-step explanation:
Now main formula is - 1835 + 60, 1835 + 120, 1835 + 180 ........
The number which 60 is multiplied can be replaced by 'n'.
So, formula becomes 1835 + 60n.
⚠️If the 'n' found in option is not an integer, then it is not the correct answer⚠️
Let's try this in the options
OPTION A
1835 + 60n = 2035
60n = 2035 - 1835
60n = 200
n = 200÷6
n = 33.3 ⚠️NOT INTEGER ⚠️
OPTION B
1835 + 60n = 2060
60n = 2060 - 1835
60n = 225
n = 225/60
n = 3.75 ⚠️NOT INTEGER ⚠️
OPTION C
1835 + 60n = 2075
60n = 240
n = 240/60
n = 4
OPTION D
1835 + 60n = 2080
60n = 2080 - 1835
60n = 245
n = 245/60
n = 4.083333 ⚠️NOT INTEGER ⚠️
CONCLUSION
option C is the only one that got 'n' as an integer, so, OPTION C - 2075 is the right answer