9•10^4 / 3•10^3 = 30.
The whale has 30 times the mass of the elephant, or 29 times more. For that reason, it's 29 times heavier than the elephant.
Answer: 78 rupees
Explanation: since 10 pens cost 60 rupees you can divide 60 by 10 to get the cost of a single pen. The cost of a single pen is 6 rupees so you can multiply that by 13 to find the cost of the 13 pens.
10p=60
60/10=6
p=6
so
13x6=78
Hope this helped! :)
Step-by-step explanation:
I think the 2nd one is the correct
Assuming you're trying to answer part B, there must be an image along with the question.