Answer is D
Last year 10 truck had mix garbage (recyclable and non recyclable garbage)
A single truck can hold 10 Kilo of garbage==> so 10 trucks will have 100 Kilo of garbage. (10 truck X 10 KG)
lets assume that 1 Kilo of garbage produced 0.8 Kilo of ash
10 kilo of garbage (entire truck can hold 10 kilo of garbage) will produce =8 kilo of ash ==> this is amount of ash per truck
so 1 truck produces 8 Kilo of ash, therefore 10 truck will produce = 10 X 8= 80 kilo of ash
This year the aim to reduce the ash to half = 40 Kilo Ash (half of 80 kilo that was produced last year)
To achieve this only half of the truck will be burned = 5 truck out of total 10 trucks.==>(50 kilo out of 100 kilo will be burned)
1 truck will contains 10 kilo, so again 8 kg of ash will be produced==> 8 kilo of ash/per truck
but now since only half the truck will be burned , the number of truck will come down to 5 from the original 10
5 truck will produce 50 kilo garbage = 5 X 8 Kilo ash = 40 kilo of ash
...
Last year 10 truck had mix garbage (recyclable and non recyclable garbage)
A single truck can hold 10 Kilo of garbage==> so 10 trucks will have 100 Kilo of garbage. (10 truck X 10 KG)
lets assume that 1 Kilo of garbage produced 0.8 Kilo of ash
10 kilo of garbage (entire truck can hold 10 kilo of garbage) will produce =8 kilo of ash ==> this is amount of ash per truck
so 1 truck produces 8 Kilo of ash, therefore 10 truck will produce = 10 X 8= 80 kilo of ash
This year the aim to reduce the ash to half = 40 Kilo Ash (half of 80 kilo that was produced last year)
To achieve this only half of the truck will be burned = 5 truck out of total 10 trucks.==>(50 kilo out of 100 kilo will be burned)
1 truck will contains 10 kilo, so again 8 kg of ash will be produced==> 8 kilo of ash/per truck
but now since only half the truck will be burned , the number of truck will come down to 5 from the original 10
5 truck will produce 50 kilo garbage = 5 X 8 Kilo ash = 40 kilo of ash
...
