The expression 5(a + b) gives the total marks of Meena, where a is her marks in Maths and b in Science, each scaled. Given a = 8 and b = 7, also her bonus is (a - b). Find the value of 5(a + b) + (a - b).
Class 7Finding the Value of an ExpressionAlgebra
A84
B76
C68
D152
Step-by-Step Solution
5(a+b)=5(8+7)=5×15=75. Bonus (a−b)=8−7=1. Total = 75 + 1 = 76.
Answer: B) 76
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