Question

factory value ( =18400 ) at end of
every year ( =8 % ) In 1979 year ( =x ) (factory value)
[
begin{array}{l}
x times frac{100-8}{100}=18400
x times frac{92}{100}=18400
x=18400 times frac{100}{921}=20000
end{array}
]
In 198 l year ( =y ) lfactory value
[
begin{array}{c}
y=18400 * frac{100+8}{100}
y=18400 times frac{92}{100}
y=16928
end{array}
]

# 3. The machinery of a machinery of a certain factory is valued at Jours ago. * 18.400 at the end of 1980. If it is supposed to depreciate each year at 8% of the value at the beginning of the year, calculate the value of the machine at the end of 1979 and 1981. (ICSE) The nresent value of a scootonin

Solution