please help me

Question

mangoes cost X dollar for the first 1.5 kg in a shop. all amount in addition to first 1.5 kg cost 50 dollar per kg. how much does it cost to buy total 5 kg mangoes from that shop?

Answer 1

the question tells us that mangoes cost $50 per kilogram (kg). If we want to know how much 5 kg of mangoes costs, we could multiply the number of kg x cost/kg = 5 kg x $50/kg = $250

But in the beginning of the question, it says there is a special price for the first 1.5 kg that is bought and it is called x dollars.

 

Because we already know the cost of the first 1.5 kg, we need to subtract that amount from the total kg so that we calculate the cost of only the additional kg.

 

So 5 - 1.5 = 3.5 kg

 

The cost of 3.5 kg is 3.5 x $50/kg = $175

 

So can you write what the total cost is? (hint: don't forget the initial cost X)