Answer:
The equations are:
and 
Step-by-step explanation:
Given
Represent bones eaten Today with T and yesterday with Y
Required
Write the equation
In the first statement, we have that:

Reading further; In the second statement

Hence, the equations are:
and 
Solving further:
Substitute 2Y for T in the second equation


Divide both sides by 4


Recall that



Answer:
The amount the school pays is £32.40
Step-by-step explanation:
The cost of each pen = 15 pence
The cost of each ruler = 20 pence
The number of pens bought by the school = 150
The number of rulers bought by the school = 90
The cost reduction (discount) on the items bought = 1/5
Therefore, we have;
The total cost of the pens bought by the school = 150 × 15 = 2250 = £22.50
The total cost of the rulers bought by the school = 90 × 20 = 1800 = £18.00
The total cost of the writing materials (rulers and pens) bought by the school = £22.50 + £18.00 = £40.50
The discount = 1/5 total cost reduction = 1/5×£40.50 = $8.10
The amount the school pays = The total cost of the writing materials - The discount
The amount the school pays = £40.50 - $8.10 = £32.40
The amount the school pays = £32.40.
Answer:
10500 rupees
Step-by-step explanation:
So 50 bags 300 per pack so
300*50= 15000
15000 is what he spent on the 50 bags of rice
So he spent 500 rupees on transportation
15000 + 500 = 15500 total spent which is not needed but extra information
30% loss is 30% of 15000 so
30% of 15000 = 4500
15000 - 4500 = 10500 rupees