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Tom's dad is 3 times older than him. In 15 years the sum of Tom's and his dad's ages will be equal to 102. How old are Tom and his dad now?

Assume that Tom's age now is x and that his dad's is 3x. Therefore, in 15 years Tom will be x+15 years old and his dad will be 3x+15 years old. Since the sum of their ages will be equal to 102, we can f...

EF
Answered by Ewelina F. Maths tutor
3378 Views

How can I prepare for Oxbridge French interview?

There are three main components to a French oxbridge interview that you can prepare for:1) You will be given a passage of prose or poem in French or English, and asked to comment on the form, content, and...

CD
Answered by Charles D. French tutor
1392 Views

Plan an experiment that would allow you to determine the maximum voltage that can be achieved using strips of lithium, zinc, copper and aluminium.

i) Pick electrolyte (e.g. hydrochloric acid) - strong acid ii) Use same volume of electrolyte; Use same electrolyte throughout; iii) Cut same size strips; Connect wire to each metal; Connect to voltmeter;...

BO
Answered by Baranse O. Chemistry tutor
1841 Views

I don't understand how muscle contraction starts, can you explain it?

So, if we looks at the sarcomere of the muscle (which is from one Z line to another) you'll see a thicker looking strand/filament called myosin and thinner strands called actin. Myosin has bulbous structu...

MK
Answered by Monica K. Biology tutor
2688 Views

Name two organelles that are present in a plant cell that are not present in an animal cell and state their functions?

There are many organelles you could choose from so long as it is only present in plant cells and you can explain it's function it is appropriate. Examples include:Cell wall - provides structural support m...

TB
Answered by Thomas B. Biology tutor
3922 Views

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