Please show how to work it out x

265.1

Step-by-step explanation:

10% = 0.1

15% = 0.15

0.1(42)(8) + 0.15(14)(15) + 200 = 33.6 + 31.5 + 200 = 265.1 - total amount  Adam earned last week.

Actual measurement of bed is:

200 cm by 150 cm

Step-by-step explanation:

Elena’s bed measures 4 cm by 3 cm on the scale drawing.

The ratio of scale drawing to actual bed size is 1 to 50.

i.e. On scale drawing Length of bed=4 cm

Actual Length of bed= 4×50 cm

                                   = 200 cm

On scale drawing Width of bed=3 cm

Actual Width of bed= 3×50 cm

                                   = 150 cm

Hence, actual measurement of bed is:

200 cm by 150 cm