2.5kg of potatoes cost £1.40 work out the cost of 4.25kg of potatoes

The cost of 4.25 kg of potatoes will be £2.38

Step-by-step explanation:

This question will be solved by unitary method.first we calculate the cost of one kg potatoes then the cost of 4.25 kg potatoes.

Now let us solve the question

∵ 2.5 kg of potatoes cost is = £1.40

∴ 1 kg of potatoes cost will be = 1.40÷2.5

∴ 4.25 kg of potatoes will cost = ×4.25

                                                   =

                                                   = £2.38

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2