Question

Q.1(a) If a = -8, b =-7, c = 6, verify that (a+b) + c = a + (b+c)
(b) If the cost of 5 kg of rice is Rs. 472 , find the cost per kg


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Answer 1

Answer:

b)94.4

Step-by-step explanation:

a) If a = -8, b =-7, c = 6, verify that (a+b) + c = a + (+c)

(a+b) + c =(-8+-7)+6 =(-8-7)+6=-15+6= -9

a + (b+c)= -8+(-7+6)= -8+(-1)= -8-1= -9

Hence proved( a+b) + c = a + (b+c)

b)

If the cost of 5 kg of rice is= Rs. 472

THEN cost per kg= 472/5=rs 94.4