4. A machine makes a staple from 20mm of wire. How many
staples will it make from 50cm of wire?

25

Step-by-step explanation:

(50 cm (centimeters))/(20 mm (millimeters))

Result:

25 m/m (meters per meter)

25

2500%

Unit conversions:

15.53 mi/km (miles per kilometer)

25 mi/mi (miles per mile)

25 squares

Interpretation:

length ratio

I'm pretty sure this is the answer

Step-by-step explanation: k is increased by 20% which means new k will be 1.2k. Similarly new x will be 1.2x and

new y will be 1.2y.

So, new T will be 1.2x×1.2x

1.2y which is equal to 1.2kx/y. Therefore, now we have

original T =kx/y

and new T =12.kx/y

increase in T is given by 1.2kx/y −kx/y which is equal to 0.2kx/y.

original     increase

kx/y         0.2kx/y

100 ?

?= 0.2kx/y ×100/kx/y

which is equal to 20% (cancel kx/y)