Answer:
price of 40 biscuits = $2.7
Step-by-step explanation:
The scale is shown in the attached image.
1- Based on the scale, 25 biscuits weigh 0.75 pounds
We can use cross multiplication to know the number of biscuits that weigh exactly one pound as follows:
25 biscuits ...........> 0.75 pounds
?? biscuits ..........> 1 pound
number of biscuits = (1*25) / 0.75 = 33.3334 biscuits
2- We know that the price of 1 pound of biscuits is $2.25. This means that the price of 33.334 biscuits is $2.25.
We can again use cross multiplication to know the price of 40 biscuits as follows:
33.3334 biscuits ...............> $2.25
40 biscuits .......................> ??
price = (40*2.25) / 33.3334 = $2.7
Hope this helps :)