Question

d) The average expenditure of a family in the last week was Rs. 111. If the expenditures on Sunday, Monday, Tuesday, Wednesday, Thursday and Friday were Rs 140, Rs 126, Rs 105, Rs 70, Rs 84 and Rs 98 respectively, find the expenditure on Saturday. 2.​

Answer 1

Answer: rs. 154

Explanation:

Write an equation with X = Saturday's expenditure

(140+126+105+70+84+98+X) /7 = 111

combine like terms

(623+X) / 7 = 111

multiply 7 on both sides

623+x = 777

subtract 623 on both sides

X = 154