simple maths arithmetic problem

Reynard lee SG

i duno how to do this two questions

Qn1: The primary production department in singapore aims to increase the local fish production form the 1999 level of 3000 to 40 000 tonnes per year in its 10-year plan. this represents an increase from 3% to 32% of total consumption. calculate the total fish consumption in 1999 and 2009.

Qn2:on a map whose scale is 1cm to 4km, the distance between two palces A and B is 6 cm and the area of the forest is 40cm(square).

A)calculate the actual distance of Ab in metres.(this i know)
B) on another map whose scale is 1:n, the area of the forest F is o.4cm(square),Calculate N.

i haven see my classmate using three steps to get the answer which is all dividing and i just cant do it! HOW? help pls thank you

dkcx SG

Consumption in 1999: 3% = 3000, 1% = 1000, 100% = 100 000

Consumption in 2009: 32% = 40 000, 1% = 1250, 100% = 125 000

Area of forest base on 1st scale:

1cm -> 4km
1cm^2 -> 16km^2
40cm^2 -> 640km^2

Base on 2nd scale

0.4cm^2 -> 640km^2
1cm^2 -> 1600km^2
1cm -> 40km

Reynard lee SG

AH THANK YOU!!