Question

kindly solve it with explanation for free points​

Answer 1

watch = 21/3 = 7

calculator = 30/3 = 10

(2bulb - 1bulb) = 1bulb = 15

3bulb = 45

•°• 7 + 10 × 45 = 7 + 450 = 457

Answer 2

in first row..

first two clocks are 9:00 and other one is 3:00

so, 9+9+3 = 21

in second row..

10+10+10 = 30

in third row..

15+15-15=15

Answer

9+10×45=459