Question

answer pls
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pls tell the steps also ​

Answer 1

Answer:

76. (4) 8

77. (3) 7h 45min

78. (2) 35

Step-by-step explanation:

76. Number of rectangular plots, which can me made = (120×160)/(40×60)

= 8

77. No explanation, just count the number of hours orally.

78. Let the sum of the 4 numbers = 'S'

Now, Average = Sum of the numbers / Total number of numbers

So the average of the 4 numbers = S/4 = 30 (given)

=> S = 30×4 = 120

Now sum of first 3 numbers = 85 (given)

Fourth number = Sum of 4 numbers - Sum of first 3 numbers

= 120 - 85 = 35