So the purpose of the question is to find how many liters of fuel per 100km.
There are 2 ways
Either by cross multiplication or by directly calculating it
• By cross multiplication: 340km -----> 255 liters 100km -----> x liters
So 340x = 100(255) x= 25500/340 x= 75 liters is the amount of liters of fuel used by the car every 100km.
• By directly calculating it: Basically since it's every 100km, you're similarly finding the percentage, so: (255 liters/ 340km) x 100km = 0.75 x 100 = 75 liters is the amount used by the car every 100km.
she packs 3 skirts and 4 pants so it's 3:4. The wording of the question is important (skirts to pants) so you have to put the number of skirts first before pants which is why it IS NOT A.
